{"id":"EUVD-2023-26860","revision":null,"records":[{"revision":"e3a7d0d40acb4760b1735ea89895dd6a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-22742","aliases":[],"title":"libgit2 fails to verify SSH keys by default","description":"libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. 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fails to verify SSH keys by default","vulnerabilityIds":["CVE-2023-22742"]},{"id":"SSA-806742","title":"SSA-806742: Multiple Vulnerabilities in SCALANCE XCM-/XRM-300 before V2.4","vulnerabilityIds":["CVE-2006-20001","CVE-2020-10735","CVE-2021-3445","CVE-2021-3638","CVE-2021-4037","CVE-2021-36369","CVE-2021-43666","CVE-2021-45451","CVE-2022-1015","CVE-2022-1348","CVE-2022-2586","CVE-2022-2880","CVE-2022-3294","CVE-2022-3437","CVE-2022-3515","CVE-2022-4415","CVE-2022-4743","CVE-2022-4744","CVE-2022-4900","CVE-2022-4904","CVE-2022-23471","CVE-2022-23521","CVE-2022-24834","CVE-2022-26691","CVE-2022-28737","CVE-2022-28738","CVE-2022-28739","CVE-2022-29154","CVE-2022-29162","CVE-2022-29187","CVE-2022-29536","CVE-2022-32148","CVE-2022-34903","CVE-2022-34918","CVE-2022-36021","CVE-2022-36227","CVE-2022-36760","CVE-2022-37436","CVE-2022-37454","CVE-2022-37797","CVE-2022-38725","CVE-2022-39189","CVE-2022-39260","CVE-2022-41409","CVE-2022-41556","CVE-2022-41715","CVE-2022-41717","CVE-2022-41723","CVE-2022-41860","CVE-2022-41861","CVE-2022-41862","CVE-2022-41903","CVE-2022-42919","CVE-2022-44370","CVE-2022-45061","CVE-2022-45142","CVE-2022-45919","CVE-2022-46392","CVE-2022-46393","CVE-2022-47629","CVE-2022-48303","CVE-2022-48434","CVE-2023-0160","CVE-2023-0330","CVE-2023-0361","CVE-2023-0494","CVE-2023-0567","CVE-2023-0568","CVE-2023-0590","CVE-2023-0662","CVE-2023-1206","CVE-2023-1380","CVE-2023-1393","CVE-2023-1611","CVE-2023-1670","CVE-2023-1838","CVE-2023-1855","CVE-2023-1859","CVE-2023-1989","CVE-2023-1990","CVE-2023-2002","CVE-2023-2124","CVE-2023-2194","CVE-2023-2269","CVE-2023-2861","CVE-2023-2953","CVE-2023-3006","CVE-2023-3090","CVE-2023-3111","CVE-2023-3141","CVE-2023-3212","CVE-2023-3247","CVE-2023-3268","CVE-2023-3301","CVE-2023-3316","CVE-2023-3390","CVE-2023-3611","CVE-2023-3776","CVE-2023-3863","CVE-2023-4128","CVE-2023-4194","CVE-2023-20593","CVE-2023-21255","CVE-2023-22490","CVE-2023-22742","CVE-2023-22745","CVE-2023-23454","CVE-2023-23931","CVE-2023-23934","CVE-2023-23946","CVE-2023-24538","CVE-2023-25153","CVE-2023-25155","CVE-2023-25193","CVE-2023-25588","CVE-2023-25690","CVE-2023-25727","CVE-2023-26081","CVE-2023-26965","CVE-2023-27522","CVE-2023-27534","CVE-2023-27535","CVE-2023-27536","CVE-2023-28450","CVE-2023-28466","CVE-2023-28486","CVE-2023-28487","CVE-2023-29402","CVE-2023-29404","CVE-2023-29405","CVE-2023-29406","CVE-2023-29409","CVE-2023-30086","CVE-2023-30456","CVE-2023-30772","CVE-2023-31084","CVE-2023-31124","CVE-2023-31130","CVE-2023-31147","CVE-2023-31436","CVE-2023-31489","CVE-2023-32067","CVE-2023-32233","CVE-2023-32573","CVE-2023-33203","CVE-2023-34256","CVE-2023-34872","CVE-2023-34969","CVE-2023-35001","CVE-2023-35788","CVE-2023-35789","CVE-2023-35823","CVE-2023-35824","CVE-2023-35828","CVE-2023-36054","CVE-2023-36617","CVE-2023-36664","CVE-2023-37920","CVE-2023-38559","CVE-2023-40283"]},{"id":"SUSE-SU-2023:1788-1","title":"Security update for libgit2","vulnerabilityIds":["CVE-2023-22742"]},{"id":"SUSE-SU-2023:1909-1","title":"Security update for libgit2","vulnerabilityIds":["CVE-2023-22742"]}],"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-2023-26860","identifiers":["EUVD-2023-26860","CVE-2023-22742"]},"retained":false,"historicalAffected":[]},{"revision":"7090dffccd944622a5eeb3497b96e947","observedAt":"2026-10-24T21:17:28.488+00:00","statement":{"source":"nvd","id":"CVE-2023-22742","aliases":[],"title":"libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set t…","description":"libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.","state":0,"publishedAt":"2023-01-20T23:15:10.307+00:00","modifiedAt":"2026-06-17T05:36:04.797+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N","score":5.3,"severity":"MEDIUM"},{"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"}],"references":["http://www.openwall.com/lists/oss-security/2023/11/06/5","https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56","https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea","https://github.com/libgit2/libgit2/releases/tag/v1.4.5","https://github.com/libgit2/libgit2/releases/tag/v1.5.1","https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq","https://www.libssh2.org/"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-22742","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-347"],"productCriteria":["cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*","cpe:2.3:a:libgit2:libgit2:1.5.0:*:*:*:*:*:*:*"],"sourceDates":{"published":"2023-01-20T23:15:10.307","lastModified":"2026-06-17T05:36:04.797"},"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-2023-22742","identifiers":["CVE-2023-22742"]},"retained":false,"historicalAffected":[]},{"revision":"6360ef8be1684317a24ba3cb18e53e80","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-m4ch-rfv5-x5g3","aliases":["CVE-2023-22742","GHSA-8643-3wh5-rmjq","RUSTSEC-2023-0003"],"title":"git2-rs fails to verify SSH keys by default","description":"The git2 and libgit2-sys crates are Rust wrappers around the [libgit2](https://libgit2.org/) C library. It was discovered that libgit2 1.5.0 and below did not verify SSH host keys when establishing an SSH connection, exposing users of the library to Man-In-the-Middle attacks.\n\nThe libgit2 team assigned [CVE-2023-22742](https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq) to this vulnerability. The following versions of the libgit2-sys Rust crate have been released:\n\n* libgit2-sys 0.14.2, updating the underlying libgit2 C library to version 1.5.1.\n* libgit2-sys 0.13.5, updating the underlying libgit2 C library to version 1.4.5.\n\nA new git2 crate version has also been released, 0.16.1. This version only bumps its libgit2-sys dependency to ensure no vulnerable libgit2-sys versions are used, but contains no code changes: if you update the libgit2-sys version there is no need to also update the git2 crate version.\n\n[You can learn more about this vulnerability in libgit2's advisory](https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq)","state":0,"publishedAt":"2023-01-20T23:36:41+00:00","modifiedAt":"2026-10-14T17:07:22+00:00","affected":[{"ecosystem":"crates.io","name":"libgit2-sys","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"crates.io","name":"libgit2-sys","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.13.5"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"crates.io","name":"git2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.16.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq","https://github.com/rust-lang/git2-rs/security/advisories/GHSA-m4ch-rfv5-x5g3","https://nvd.nist.gov/vuln/detail/CVE-2023-22742","https://github.com/rust-lang/git2-rs/commit/87934f87d36753ed702792ec063be7246444a8e1","https://github.com/rust-lang/git2-rs","https://rustsec.org/advisories/RUSTSEC-2023-0003.html"],"sourceUrl":"https://github.com/advisories/GHSA-m4ch-rfv5-x5g3","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-m4ch-rfv5-x5g3","identifiers":["GHSA-m4ch-rfv5-x5g3","CVE-2023-22742","GHSA-8643-3wh5-rmjq","RUSTSEC-2023-0003"]},"retained":false,"historicalAffected":[]},{"revision":"f13c1efa64954062a8f85302a4ed920e","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2023-0003","aliases":["CVE-2023-22742","GHSA-8643-3wh5-rmjq","GHSA-m4ch-rfv5-x5g3"],"title":"git2 does not verify SSH keys by default","description":"The git2 and libgit2-sys crates are Rust wrappers around the\n[libgit2]() C library. It was discovered that libgit2 1.5.0\nand below did not verify SSH host keys when establishing an SSH connection,\nexposing users of the library to Man-In-the-Middle attacks.\n\nThe libgit2 team assigned [CVE-2023-22742][libgit2-advisory] to this\nvulnerability. The following versions of the libgit2-sys Rust crate have been\nreleased:\n\n* libgit2-sys 0.14.2, updating the underlying libgit2 C library to version 1.5.1.\n* libgit2-sys 0.13.5, updating the underlying libgit2 C library to version 1.4.5.\n\nA new git2 crate version has also been released, 0.16.1. This version only\nbumps its libgit2-sys dependency to ensure no vulnerable libgit2-sys versions\nare used, but contains no code changes: if you update the libgit2-sys version\nthere is no need to also update the git2 crate version.\n\n[You can learn more about this vulnerability in libgit2's advisory][libgit2-advisory]\n\n[libgit2]: https://libgit2.org/\n[libgit2-advisory]: https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq","state":0,"publishedAt":"2023-01-20T12:00:00+00:00","modifiedAt":"2026-10-12T18:00:06.1122064+00:00","affected":[{"ecosystem":"crates.io","name":"libgit2-sys","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"},{"kind":"fixed","version":"0.13.5"},{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://crates.io/crates/libgit2-sys","https://rustsec.org/advisories/RUSTSEC-2023-0003.html","https://github.com/rust-lang/git2-rs/commit/87934f87d36753ed702792ec063be7246444a8e1"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2023-0003","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2023-0003","identifiers":["RUSTSEC-2023-0003","CVE-2023-22742","GHSA-8643-3wh5-rmjq","GHSA-m4ch-rfv5-x5g3"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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