CVE-2026-118768Botan: CLI utility `ocsp_check` accepts unauthenticated responses

Descripción

Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/randombit/botan/security/advisories/GHSA-mpr7-9494-4qcw
• https://github.com/randombit/botan/pull/5825
• https://github.com/randombit/botan/commit/46b2a9ca59b0797184fbf7537495bda6e61a1983