Opencryptoki
Monthly
openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.
Privilege escalation in openCryptoki 2.3.2+ allows token-group members to exploit insecure symlink handling in group-writable token directories, enabling file operations on arbitrary filesystem targets when the library runs with elevated privileges. An attacker with token-group membership can plant symlinks to redirect administrative operations, potentially leading to privilege escalation or unauthorized data access. A patch is available.
openCryptoki is a PKCS#11 library and tools for Linux and AIX. [CVSS 6.6 MEDIUM]
A timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required.
openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.
Privilege escalation in openCryptoki 2.3.2+ allows token-group members to exploit insecure symlink handling in group-writable token directories, enabling file operations on arbitrary filesystem targets when the library runs with elevated privileges. An attacker with token-group membership can plant symlinks to redirect administrative operations, potentially leading to privilege escalation or unauthorized data access. A patch is available.
openCryptoki is a PKCS#11 library and tools for Linux and AIX. [CVSS 6.6 MEDIUM]
A timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required.