#VU103600 Covert Timing Channel in OpenSSL - CVE-2024-13176


| Updated: 2025-02-11

Vulnerability identifier: #VU103600

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-13176

CWE-ID: CWE-385

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to recover a private key.

The vulnerability exists due to a timing side-channel in ECDSA signature computations. A remote attacker can recover the private key and decrypt data.

Successful exploitation of the vulnerability requires that the attacker's process must either be located in the same physical computer or must have a very fast network connection with low latency.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenSSL: 1.0.2h - 1.0.2p, 1.1.1l - 1.1.1p, 3.0.0 - 3.0.15, 3.1.0 - 3.1.7, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.3.0, 3.3.1, 3.3.2, 3.4.0


External links
http://www.openwall.com/lists/oss-security/2025/01/20/2
http://github.com/openssl/openssl/commit/07272b05b04836a762b4baa874958af51d513844
http://github.com/openssl/openssl/commit/2af62e74fb59bc469506bc37eb2990ea408d9467
http://github.com/openssl/openssl/commit/392dcb336405a0c94486aa6655057f59fd3a0902
http://github.com/openssl/openssl/commit/4b1cb94a734a7d4ec363ac0a215a25c181e11f65
http://github.com/openssl/openssl/commit/77c608f4c8857e63e98e66444e2e761c9627916f
http://github.openssl.org/openssl/extended-releases/commit/0d5fd1ab987f7571e2c955d8d8b638fc0fb54ded
http://github.openssl.org/openssl/extended-releases/commit/a2639000db19878d5d89586ae7b725080592ae86
http://openssl-library.org/news/secadv/20250120.txt
http://security.netapp.com/advisory/ntap-20250124-0005/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability