CVE-2026-118765Botan: AutoSeeded_RNG can become reinitialized from predictable data after clearing state

Beschreibung

Botan is a C++ cryptography library. From 3.7.0 until 3.13.0, an application that calls AutoSeeded_RNG::clear() and then calls randomize with an empty output buffer while the generator is unseeded can cause AutoSeeded_RNG to mark itself seeded without consulting the configured entropy source. On builds without BOTAN_HAS_SYSTEM_RNG, the fallback uses only a clock value and process ID, so a later non-empty request can produce output from predictable state. This issue is fixed in version 3.13.0.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• https://github.com/randombit/botan/security/advisories/GHSA-95xx-xh9v-v9c4
• https://github.com/randombit/botan/pull/5838
• https://github.com/randombit/botan/commit/a7389222ace990604b6985add91ee06f55a80c0e