CVE-2026-57163

A flaw was found in PJSIP. A stack buffer overflow exists in the GnuTLS TLS backend when parsing the Subject Alternative Name extension of a peer certificate. A remote attacker can exploit this by presenting a specially crafted certificate during the TLS handshake, before SIP-level authentication...

DEBIAN-CVE-2026-57163

PJSIP is a free and open source multimedia communication library written in C. Prior to commit c4a151a, a stack buffer overflow exists in the GnuTLS TLS backend when parsing the Subject Alternative Name extension of a peer certificate tlscertgetinfo in sslsockgtls.c. Only GnuTLS builds are affect...

CVE-2026-57163 PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend

PJSIP is a free and open source multimedia communication library written in C. Prior to commit c4a151a, a stack buffer overflow exists in the GnuTLS TLS backend when parsing the Subject Alternative Name extension of a peer certificate tlscertgetinfo in sslsockgtls.c. Only GnuTLS builds are affect...