Botan Project Botan vulnerabilities

CVE-2016-2194 [HIGH] CWE-20 CVE-2016-2194: The ressol function in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers to cau The ressol function in Botan before 1.10.11 and 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (infinite loop) via unspecified input to the OS2ECP function, related to a composite modulus.

CVE-2016-6879 [HIGH] CWE-320 CVE-2016-6879: The X509_Certificate::allowed_usage function in botan 1.11.x before 1.11.31 might allow attackers to The X509_Certificate::allowed_usage function in botan 1.11.x before 1.11.31 might allow attackers to have unspecified impact by leveraging a call with more than one Key_Usage set in the enum value.

CVE-2015-5727 [HIGH] CWE-399 CVE-2015-5727: The BER decoder in Botan 1.10.x before 1.10.10 and 1.11.x before 1.11.19 allows remote attackers to The BER decoder in Botan 1.10.x before 1.10.10 and 1.11.x before 1.11.19 allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors, related to a length field.

CVE-2015-5726 [HIGH] CWE-20 CVE-2015-5726: The BER decoder in Botan 0.10.x before 1.10.10 and 1.11.x before 1.11.19 allows remote attackers to The BER decoder in Botan 0.10.x before 1.10.10 and 1.11.x before 1.11.19 allows remote attackers to cause a denial of service (application crash) via an empty BIT STRING in ASN.1 data.

CVE-2018-9860 [HIGH] CWE-193 CVE-2018-9860: An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processi An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This co

CVE-2021-40529 [MEDIUM] CWE-327 CVE-2021-40529: The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allow The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exp

CVE-2026-32883 [MEDIUM] CWE-347 CVE-2026-32883: Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path v Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0.

CVE-2015-7825 [HIGH] CVE-2015-7825: botan before 1.11.22 improperly validates certificate paths, which allows remote attackers to cause botan before 1.11.22 improperly validates certificate paths, which allows remote attackers to cause a denial of service (infinite loop and memory consumption) via a certificate with a loop in the certificate chain.

CVE-2018-20187 [MEDIUM] CWE-320 CVE-2018-20187: A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measurin A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends o

CVE-2024-50382 [MEDIUM] CWE-203 CVE-2024-50382: Botan before 3.6.0, when certain LLVM versions are used, has compiler-induced secret-dependent contr Botan before 3.6.0, when certain LLVM versions are used, has compiler-induced secret-dependent control flow in lib/utils/ghash/ghash.cpp in GHASH in AES-GCM. There is a branch instead of an XOR with carry. This was observed for Clang in LLVM 15 on RISC-V.

CVE-2024-50383 [MEDIUM] CWE-203 CVE-2024-50383: Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent oper Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)

CVE-2026-32884 [MEDIUM] CWE-295 CVE-2026-32884: Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certific Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of allowable DNS names, if no subject alternative name is defined in the end-entity certificate Botan would check that the CN was allowed by the DNS name constraints, even though this check is tec

CVE-2024-34702 [MEDIUM] CVE-2024-34702: Botan is a C++ cryptography library 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 3.5.0 and 2.19.5, checking name constraints in X.509 certificates is quadratic in the number of names and name constraints. An attacker who presented a certificate chain which contained a very large number of names in the SubjectAlternativeName, sign

CVE-2024-39312 [MEDIUM] CWE-295 CVE-2024-39312: Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an 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. A bug in the parsing of name constraint extensions in X.509 certificates meant that if the extension included both permitted subtrees and excluded subtrees, only the permitted subtree wo

CVE-2016-8871 [MEDIUM] CWE-200 CVE-2016-8871: In Botan 1.11.29 through 1.11.32, RSA decryption with certain padding options had a detectable timin In Botan 1.11.29 through 1.11.32, RSA decryption with certain padding options had a detectable timing channel which could given sufficient queries be used to recover plaintext, aka an "OAEP side channel" attack.

CVE-2018-12435 [MEDIUM] CWE-200 CVE-2018-12435: Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same phys

CVE-2017-14737 [MEDIUM] CVE-2017-14737: A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11 A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and 2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by CacheD. This occurs because an array is indexed with bits derived from a secret key.