{"id":"GHSA-p52g-cm5j-mjv4","summary":"openssl-src subject to Timing Oracle in RSA Decryption","details":"A 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.\n\nFor 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.","aliases":["CVE-2022-4304","RUSTSEC-2023-0007"],"modified":"2026-07-17T21:06:24.755893160Z","published":"2023-02-08T22:31:42Z","database_specific":{"github_reviewed_at":"2023-02-08T22:31:42Z","nvd_published_at":"2023-02-08T20:15:00Z","cwe_ids":["CWE-203"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4304"},{"type":"WEB","url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2023-0007.html"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202402-08"},{"type":"WEB","url":"https://www.openssl.org/news/secadv/20230207.txt"}],"affected":[{"package":{"name":"openssl-src","ecosystem":"crates.io","purl":"pkg:cargo/openssl-src"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"111.25.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-p52g-cm5j-mjv4/GHSA-p52g-cm5j-mjv4.json"}},{"package":{"name":"openssl-src","ecosystem":"crates.io","purl":"pkg:cargo/openssl-src"},"ranges":[{"type":"SEMVER","events":[{"introduced":"300.0.0"},{"fixed":"300.0.12"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-p52g-cm5j-mjv4/GHSA-p52g-cm5j-mjv4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}