7.5
Élevée
CVE-2024-34703 Botan is a C++ cryptography library
Description
Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to versions 3.3.0 and 2.19.4, an attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large. The proof of concept used a 16Kbit prime for this purpose. When parsing, the parameter is checked to be prime, causing excessive computation. This was patched in 2.19.4 and 3.3.0 to allow the prime parameter of the elliptic curve to be at most 521 bits. No known workarounds are available. Note that support for explicit encoding of elliptic curve parameters is deprecated in Botan.
Produits et versions touchés
Autres CVE de Botan
Les 17 CVE de Botan →
CVE-2026-104267
Botan: scrypt V-buffer heap overflow on 32-bit from constructor-accepted parameters
4.1
Moyenne
CVE-2026-48057
Botan: directoryName nameConstraint bypass via multi-AVA RDN flattening in matches_dn
2.1
Faible
CVE-2026-118769
Botan is a C++ cryptography library
9.2
Critique
CVE-2026-118768
Botan is a C++ cryptography library
5.9
Moyenne