{"id":"CVE-2022-1434","revision":null,"records":[{"revision":"e79d250cc3f942ab9a96f5157c427990","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2022-1434","aliases":[],"title":"Incorrect MAC key used in the RC4-MD5 ciphersuite","description":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at that point. Many application protocols require data to be sent from the client to the server first. Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both directions. In this case both clients and servers could be affected, regardless of the application protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is 1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).","state":0,"publishedAt":"2022-05-03T15:15:23.387+00:00","modifiedAt":"2026-10-14T12:43:59.638+00:00","affected":[{"ecosystem":"Vendor product","name":"OpenSSL","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OpenSSL\",\n                    \"product\": \"OpenSSL\",\n                    \"versions\": [\n                        {\n                            \"version\": \"Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2)\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://www.openssl.org/news/secadv/20220503.txt","https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=7d56a74a96828985db7354a55227a511615f732b","https://security.netapp.com/advisory/ntap-20220602-0009/","https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-1434","license":"CVE Program Terms of Use","key":"cve-program:CVE-2022-1434","identifiers":["CVE-2022-1434"]},"retained":false,"historicalAffected":[]},{"revision":"f4fbc7164f5e4b8d8746ac2904f783d2","observedAt":"2026-11-09T23:11:09.009+00:00","statement":{"source":"euvd","id":"EUVD-2022-2698","aliases":["CVE-2022-1434","GHSA-638m-m8mh-7gw2"],"title":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify da…","description":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at that point. Many application protocols require data to be sent from the client to the server first. Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both directions. In this case both clients and servers could be affected, regardless of the application protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is 1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[],"references":["https://www.openssl.org/news/secadv/20220503.txt","https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=7d56a74a96828985db7354a55227a511615f732b","https://security.netapp.com/advisory/ntap-20220602-0009/","https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-2698","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 3, 2022, 3:15:23 PM","dateUpdated":"Oct 14, 2026, 12:43:59 PM"},"relatedAdvisories":[{"id":"SSA-794697","title":"SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1","vulnerabilityIds":["CVE-2020-12762","CVE-2021-3759","CVE-2021-4037","CVE-2021-33655","CVE-2021-44879","CVE-2022-0171","CVE-2022-1012","CVE-2022-1015","CVE-2022-1184","CVE-2022-1292","CVE-2022-1343","CVE-2022-1434","CVE-2022-1462","CVE-2022-1473","CVE-2022-1679","CVE-2022-1852","CVE-2022-1882","CVE-2022-2068","CVE-2022-2078","CVE-2022-2097","CVE-2022-2153","CVE-2022-2274","CVE-2022-2327","CVE-2022-2503","CVE-2022-2586","CVE-2022-2588","CVE-2022-2602","CVE-2022-2663","CVE-2022-2905","CVE-2022-2959","CVE-2022-2978","CVE-2022-3028","CVE-2022-3104","CVE-2022-3115","CVE-2022-3169","CVE-2022-3303","CVE-2022-3521","CVE-2022-3524","CVE-2022-3534","CVE-2022-3545","CVE-2022-3564","CVE-2022-3565","CVE-2022-3586","CVE-2022-3594","CVE-2022-3606","CVE-2022-3621","CVE-2022-3625","CVE-2022-3628","CVE-2022-3629","CVE-2022-3633","CVE-2022-3635","CVE-2022-3646","CVE-2022-3649","CVE-2022-4095","CVE-2022-4129","CVE-2022-4139","CVE-2022-4269","CVE-2022-4304","CVE-2022-4450","CVE-2022-4662","CVE-2022-20421","CVE-2022-20422","CVE-2022-20566","CVE-2022-20572","CVE-2022-21123","CVE-2022-21125","CVE-2022-21166","CVE-2022-21505","CVE-2022-26373","CVE-2022-32250","CVE-2022-32296","CVE-2022-34918","CVE-2022-36123","CVE-2022-36280","CVE-2022-36879","CVE-2022-36946","CVE-2022-39188","CVE-2022-39190","CVE-2022-40307","CVE-2022-40768","CVE-2022-41218","CVE-2022-41222","CVE-2022-41674","CVE-2022-41849","CVE-2022-41850","CVE-2022-42328","CVE-2022-42329","CVE-2022-42432","CVE-2022-42703","CVE-2022-42719","CVE-2022-42720","CVE-2022-42721","CVE-2022-42722","CVE-2022-42895","CVE-2022-42896","CVE-2022-43750","CVE-2022-47518","CVE-2022-47520","CVE-2022-47929","CVE-2022-47946","CVE-2023-0215","CVE-2023-0286","CVE-2023-0464","CVE-2023-0465","CVE-2023-0466","CVE-2023-0590","CVE-2023-1077","CVE-2023-1095","CVE-2023-1206","CVE-2023-2898","CVE-2023-3141","CVE-2023-3268","CVE-2023-3338","CVE-2023-3389","CVE-2023-3446","CVE-2023-3609","CVE-2023-3610","CVE-2023-3611","CVE-2023-3772","CVE-2023-3773","CVE-2023-3777","CVE-2023-4004","CVE-2023-4015","CVE-2023-4273","CVE-2023-4623","CVE-2023-4911","CVE-2023-4921","CVE-2023-5178","CVE-2023-5197","CVE-2023-5678","CVE-2023-5717","CVE-2023-6606","CVE-2023-6931","CVE-2023-6932","CVE-2023-7008","CVE-2023-7104","CVE-2023-23454","CVE-2023-23455","CVE-2023-23559","CVE-2023-26607","CVE-2023-31085","CVE-2023-31436","CVE-2023-32233","CVE-2023-35001","CVE-2023-35827","CVE-2023-36660","CVE-2023-37453","CVE-2023-39189","CVE-2023-39192","CVE-2023-39193","CVE-2023-39194","CVE-2023-42753","CVE-2023-42754","CVE-2023-42755","CVE-2023-45863","CVE-2023-45871","CVE-2023-48795","CVE-2023-50495","CVE-2023-51384","CVE-2023-51385","CVE-2023-51767","CVE-2024-0232","CVE-2024-0553","CVE-2024-0567","CVE-2024-0584","CVE-2024-0684","CVE-2024-22365","CVE-2024-25062"]},{"id":"SSA-398330","title":"SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP  >= V3.1.0 and < 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Brownfield Connectivity Client","vulnerabilityIds":["CVE-2022-1292","CVE-2022-1343","CVE-2022-1434","CVE-2022-1473"]},{"id":"WID-SEC-W-2022-0071","title":"OpenSSL: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2022-1292","CVE-2022-1343","CVE-2022-1434","CVE-2022-1473"]},{"id":"SSA-953464","title":"SSA-953464: Multiple Vulnerabilites in Siemens Brownfield Connectivity - Client before V2.15","vulnerabilityIds":["CVE-2022-1292","CVE-2022-1343","CVE-2022-1434","CVE-2022-1473"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2022-2698","identifiers":["EUVD-2022-2698","CVE-2022-1434","GHSA-638m-m8mh-7gw2"]},"retained":false,"historicalAffected":[]},{"revision":"17cd5b44ee25479aa806f9b1b8309342","observedAt":"2026-10-24T19:17:43.386+00:00","statement":{"source":"nvd","id":"CVE-2022-1434","aliases":[],"title":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify da…","description":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at that point. Many application protocols require data to be sent from the client to the server first. Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both directions. In this case both clients and servers could be affected, regardless of the application protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is 1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).","state":0,"publishedAt":"2022-05-03T16:15:18.917+00:00","modifiedAt":"2026-10-14T13:17:18.813+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 2.0 · nvd@nist.gov · Primary","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf","https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=7d56a74a96828985db7354a55227a511615f732b","https://security.netapp.com/advisory/ntap-20220602-0009/","https://www.openssl.org/news/secadv/20220503.txt","https://cert-portal.siemens.com/productcert/html/ssa-398330.html","https://cert-portal.siemens.com/productcert/html/ssa-794697.html","https://cert-portal.siemens.com/productcert/html/ssa-953464.html"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-1434","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-327"],"productCriteria":["cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*","cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:*","cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*","cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:*:*:*:*:*:*:*","cpe:2.3:a:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:*","cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:*","cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:hyper-v:*:*","cpe:2.3:a:netapp:solidfire\\,_enterprise_sds_\\&_hci_storage_node:-:*:*:*:*:*:*:*","cpe:2.3:a:netapp:solidfire_\\&_hci_management_node:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:aff_8300_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:aff_8300:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:fas_8300_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:fas_8300:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:aff_8700_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:aff_8700:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:fas_8700_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:fas_8700:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:aff_a400:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:fabric-attached_storage_a400_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:fabric-attached_storage_a400:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:aff_500f_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:aff_500f:-:*:*:*:*:*:*:*","cpe:2.3:o:netapp:fas_500f_firmware:-:*:*:*:*:*:*:*","cpe:2.3:h:netapp:fas_500f:-:*:*:*:*:*:*:*"],"sourceDates":{"published":"2022-05-03T16:15:18.917","lastModified":"2026-10-14T13:17:18.813"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2022-1434","identifiers":["CVE-2022-1434"]},"retained":false,"historicalAffected":[]},{"revision":"b4814811941647fb8bdc160db3ca935b","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-638m-m8mh-7gw2","aliases":["CVE-2022-1434","RUSTSEC-2022-0026"],"title":"Incorrect MAC key used in the RC4-MD5 ciphersuite","description":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from one endpoint to an OpenSSL 3.0 recipient such that the modified data would still pass the MAC integrity check. Note that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint will always be rejected by the recipient and the connection will fail at that point. Many application protocols require data to be sent from the client to the server first. Therefore, in such a case, only an OpenSSL 3.0 server would be impacted when talking to a non-OpenSSL 3.0 client. If both endpoints are OpenSSL 3.0 then the attacker could modify data being sent in both directions. In this case both clients and servers could be affected, regardless of the application protocol. Note that in the absence of an attacker this bug means that an OpenSSL 3.0 endpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the handshake when using this ciphersuite. The confidentiality of data is not impacted by this issue, i.e. an attacker cannot decrypt data that has been encrypted using this ciphersuite - they can only modify it. In order for this attack to work both endpoints must legitimately negotiate the RC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0, and is not available within the default provider or the default ciphersuite list. This ciphersuite will never be used if TLSv1.3 has been negotiated. In order for an OpenSSL 3.0 endpoint to use this ciphersuite the following must have occurred: 1) OpenSSL must have been compiled with the (non-default) compile time option enable-weak-ssl-ciphers 2) OpenSSL must have had the legacy provider explicitly loaded (either through application code or via configuration) 3) The ciphersuite must have been explicitly added to the ciphersuite list 4) The libssl security level must have been set to 0 (default is 1) 5) A version of SSL/TLS below TLSv1.3 must have been negotiated 6) Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any others that both endpoints have in common Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).","state":0,"publishedAt":"2022-05-04T00:00:22+00:00","modifiedAt":"2026-09-10T03:49:37.8518914+00:00","affected":[{"ecosystem":"crates.io","name":"openssl-src","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"300.0.0"},{"kind":"fixed","version":"300.0.6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2022-1434","https://github.com/github/advisory-database/issues/405","https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=7d56a74a96828985db7354a55227a511615f732b","https://rustsec.org/advisories/RUSTSEC-2022-0026.html","https://security.netapp.com/advisory/ntap-20220602-0009","https://www.openssl.org/news/secadv/20220503.txt"],"sourceUrl":"https://github.com/advisories/GHSA-638m-m8mh-7gw2","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-638m-m8mh-7gw2","identifiers":["GHSA-638m-m8mh-7gw2","CVE-2022-1434","RUSTSEC-2022-0026"]},"retained":false,"historicalAffected":[]},{"revision":"5a7cb2c8e0df409c856c20cee078be25","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2022-0026","aliases":["CVE-2022-1434","GHSA-638m-m8mh-7gw2"],"title":"Incorrect MAC key used in the RC4-MD5 ciphersuite","description":"The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the\nAAD data as the MAC key. This makes the MAC key trivially predictable.\n\nAn attacker could exploit this issue by performing a man-in-the-middle attack to\nmodify data being sent from one endpoint to an OpenSSL 3.0 recipient such that\nthe modified data would still pass the MAC integrity check.\n\nNote that data sent from an OpenSSL 3.0 endpoint to a non-OpenSSL 3.0 endpoint\nwill always be rejected by the recipient and the connection will fail at that\npoint. Many application protocols require data to be sent from the client to the\nserver first. Therefore, in such a case, only an OpenSSL 3.0 server would be\nimpacted when talking to a non-OpenSSL 3.0 client.\n\nIf both endpoints are OpenSSL 3.0 then the attacker could modify data being\nsent in both directions. In this case both clients and servers could be\naffected, regardless of the application protocol.\n\nNote that in the absence of an attacker this bug means that an OpenSSL 3.0\nendpoint communicating with a non-OpenSSL 3.0 endpoint will fail to complete the\nhandshake when using this ciphersuite.\n\nThe confidentiality of data is not impacted by this issue, i.e. an attacker\ncannot decrypt data that has been encrypted using this ciphersuite - they can\nonly modify it.\n\nIn order for this attack to work both endpoints must legitimately negotiate the\nRC4-MD5 ciphersuite. This ciphersuite is not compiled by default in OpenSSL 3.0,\nand is not available within the default provider or the default ciphersuite\nlist. This ciphersuite will never be used if TLSv1.3 has been negotiated. In\norder for an OpenSSL 3.0 endpoint to use this ciphersuite the following must\nhave occurred:\n\n1. OpenSSL must have been compiled with the (non-default) compile time option\n   enable-weak-ssl-ciphers\n2. OpenSSL must have had the legacy provider explicitly loaded (either through\n   application code or via configuration)\n3. The ciphersuite must have been explicitly added to the ciphersuite list\n4. The libssl security level must have been set to 0 (default is 1)\n5. A version of SSL/TLS below TLSv1.3 must have been negotiated\n6. Both endpoints must negotiate the RC4-MD5 ciphersuite in preference to any\n   others that both endpoints have in common","state":0,"publishedAt":"2022-05-03T12:00:00+00:00","modifiedAt":"2023-11-08T04:07:48.871438+00:00","affected":[{"ecosystem":"crates.io","name":"openssl-src","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"300.0.0"},{"kind":"fixed","version":"300.0.6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null}],"references":["https://crates.io/crates/openssl-src","https://rustsec.org/advisories/RUSTSEC-2022-0026.html","https://www.openssl.org/news/secadv/20220503.txt"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2022-0026","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2022-0026","identifiers":["RUSTSEC-2022-0026","CVE-2022-1434","GHSA-638m-m8mh-7gw2"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-10T04:04:18.1997683+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-10T04:04:18.1997683+00:00","lastSuccessAt":"2026-11-10T04:04:18.3995607+00:00","error":null,"lastVerifiedAt":"2026-11-10T04:04:18.3995615+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-8859cf40d4337e24bd2f258cc7778fbad01bb24c79d057aaf34cf1dfc6f8917d-81377d708f64394c8eb9b62eea2364ac8dfdeb35ef3610cd5a031d185fc8d86c","complete":true,"records":421867,"lastAttemptAt":"2026-11-10T04:02:14.3050104+00:00","lastSuccessAt":"2026-11-10T04:02:14.2925615+00:00","error":null,"lastVerifiedAt":"2026-11-10T04:02:14.3050104+00:00","snapshotPublishedAt":"2026-11-10T03:29:16+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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