What’s Vulnerable › Vulnerabilities

CVE-2022-31003: Heap-based Buffer Overflow and Out-of-bounds Write in Sofia-SIP

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-31 · updated 2026-06-17
• Weakness: CWE-122

Description

Sofia-SIP is an open-source Session Initiation Protocol (SIP) User-Agent library. Prior to version 1.13.8, when parsing each line of a sdp message, `rest = record + 2` will access the memory behind `\0` and cause an out-of-bounds write. An attacker can send a message with evil sdp to FreeSWITCH, causing a crash or more serious consequence, such as remote code execution. Version 1.13.8 contains a patch for this issue.

Affected products

• Debian Linux: 10.0
• freeswitch sofia-sip: before 1.13.8 — fixed in 1.13.8

How to fix

Upgrade to a fixed version: freeswitch sofia-sip 1.13.8. Check the vendor advisory for mitigations.

References

• https://github.com/freeswitch/sofia-sip/commit/907f2ac0ee504c93ebfefd676b4632a3575908c9
• https://github.com/freeswitch/sofia-sip/security/advisories/GHSA-8w5j-6g2j-pxcp
• https://lists.debian.org/debian-lts-announce/2022/09/msg00001.html
• https://security.gentoo.org/glsa/202210-18
• https://www.debian.org/security/2023/dsa-5410
• https://github.com/freeswitch/sofia-sip/commit/907f2ac0ee504c93ebfefd676b4632a3575908c9
• https://github.com/freeswitch/sofia-sip/security/advisories/GHSA-8w5j-6g2j-pxcp
• https://lists.debian.org/debian-lts-announce/2022/09/msg00001.html
• https://security.gentoo.org/glsa/202210-18
• https://www.debian.org/security/2023/dsa-5410

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