ghsa-p52g-cm5j-mjv4
Vulnerability from github
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.
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.
{ "affected": [ { "package": { "ecosystem": "crates.io", "name": "openssl-src" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "111.25.0" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "crates.io", "name": "openssl-src" }, "ranges": [ { "events": [ { "introduced": "300.0.0" }, { "fixed": "300.0.12" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2022-4304" ], "database_specific": { "cwe_ids": [ "CWE-203" ], "github_reviewed": true, "github_reviewed_at": "2023-02-08T22:31:42Z", "nvd_published_at": "2023-02-08T20:15:00Z", "severity": "MODERATE" }, "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.\n", "id": "GHSA-p52g-cm5j-mjv4", "modified": "2023-02-24T19:03:43Z", "published": "2023-02-08T22:31:42Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4304" }, { "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" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "type": "CVSS_V3" } ], "summary": "openssl-src subject to Timing Oracle in RSA Decryption" }
Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.