A timing based side channel exists in the OpenSSL RSA Decryption implementation
Exact source revision recorded 24 Oct 2026 21:17:16 UTC. It does not establish the source's current position. Latest evidence.
nvd · CVE-2022-4304
PublishedA timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.
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.
Source analysis status: Modified
Weakness classifications: CWE-203
Original publisher date fields
published: 2023-02-08T20:15:23.887
lastModified: 2026-10-14T15:16:59.863
4 source CPE criteria · context only
- cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
- cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*
- cpe:2.3:a:stormshield:sslvpn:*:*:*:*:*:*:*:*
- cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*
The original JSON retains the logical configuration operators, exclusions and version bounds.
- Source published
- 8 Feb 2023 20:15:23 UTC
- Source modified
- 14 Oct 2026 15:16:59 UTC
- Observed here
- 24 Oct 2026 21:17:16 UTC
- Source terms
- NIST NVD usage terms; underlying source attribution retained
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · [email protected] · Primary · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 · Secondary · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N