CVE-2026-57163

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Source

https://cve.org/CVERecord?id=CVE-2026-57163

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57163.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-57163

Aliases

GHSA-jm2j-6rg6-qvwx

Downstream

DEBIAN-CVE-2026-57163

Published

2026-09-04T17:11:40.013Z

Modified

2026-09-06T08:07:53.973653Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend

Details

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 sslsock_gtls.c). Only GnuTLS builds are affected (--with-gnutls); OpenSSL and Apple SecureTransport/Network.framework builds are not affected. While extracting certificate information after a TLS handshake, an incorrect buffer-size value can cause an oversized SubjectAltName entry to be written past the end of a fixed-size stack buffer. A network-positioned attacker presenting a crafted certificate — a malicious server to a connecting client, or a malicious client to a server that requests certificates — can trigger this during the TLS handshake, before any SIP-level authentication. Impact may range from unexpected application termination to control flow hijack/memory corruption. This issue has been patched via commit c4a151a.

Database specific

{
    "cwe_ids": [
        "CWE-121"
    ],
    "cna_assigner": "GitHub_M",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "c4a151af86fadd16d9480b2603eeb2abf4fb4f78"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57163.json"
}

References

Affected packages

Git / github.com/pjsip/pjproject

Affected ranges

Type

GIT

Repo

https://github.com/pjsip/pjproject

Events

Introduced

Fixed

c4a151af86fadd16d9480b2603eeb2abf4fb4f78

Database specific

Show details

{
    "source": "REFERENCES"
}

Affected versions

2.*

2.10

2.11

2.12

2.13

2.14

2.15

2.16

2.17

Database specific

vanir_signatures

[
    {
        "target": {
            "file": "pjlib/src/pj/ssl_sock_gtls.c",
            "function": "tls_cert_get_info"
        },
        "deprecated": false,
        "id": "CVE-2026-57163-2f37e7f0",
        "signature_version": "v1",
        "digest": {
            "function_hash": "188502425246932374218422840014229499100",
            "length": 2309.0
        },
        "signature_type": "Function",
        "source": "https://github.com/pjsip/pjproject/commit/c4a151af86fadd16d9480b2603eeb2abf4fb4f78"
    },
    {
        "target": {
            "file": "pjlib/src/pj/ssl_sock_gtls.c"
        },
        "deprecated": false,
        "id": "CVE-2026-57163-e7dc9a28",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "124120757433032947146882100368131164518",
                "209119722179600850278846081125683827922",
                "242972198365908117749143642779338420715",
                "136202120947234041609691775325918596192",
                "44403053411282909011170079249546239346",
                "276421115470801996193320324908227785548",
                "22343119262153923010491813264015689448",
                "48240597120045865951420096119265919745"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/pjsip/pjproject/commit/c4a151af86fadd16d9480b2603eeb2abf4fb4f78"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57163.json"

vanir_signatures_modified

"2026-09-06T08:07:53Z"