CVE-2023-22741: Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. In affected versions Sofia-SIP **lacks both message...

Description

Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. In affected versions Sofia-SIP **lacks both message length and attributes length checks** when it handles STUN packets, leading to controllable heap-over-flow. For example, in stun_parse_attribute(), after we get the attribute's type and length value, the length will be used directly to copy from the heap, regardless of the message's left size. Since network users control the overflowed length, and the data is written to heap chunks later, attackers may achieve remote code execution by heap grooming or other exploitation methods. The bug was introduced 16 years ago in sofia-sip 1.12.4 (plus some patches through 12/21/2006) to in tree libs with git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3774 d0543943-73ff-0310-b7d9-9358b9ac24b2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.38%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Signalwire	Sofia-Sip	< 1.13.11

References

https://github.com/freeswitch/sofia-sip/commit/da53e4fbcb138b080a75576dd49c1fff2ada2764Patch, Third Party Advisory
https://github.com/freeswitch/sofia-sip/security/advisories/GHSA-8599-x7rq-fr54Exploit, Patch, Third Party Advisory
https://www.debian.org/security/2023/dsa-5410
https://github.com/freeswitch/sofia-sip/commit/da53e4fbcb138b080a75576dd49c1fff2ada2764Patch, Third Party Advisory
https://github.com/freeswitch/sofia-sip/security/advisories/GHSA-8599-x7rq-fr54Exploit, Patch, Third Party Advisory
https://www.debian.org/security/2023/dsa-5410

Timeline

Published: Jan 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22741?

Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. In affected versions Sofia-SIP **lacks both message length and attributes length checks** when it handles STUN packets, leading to controllable heap-over-flow. For example, in stun_parse_attribute(), after we get the attribute's type and length value, the length will be used directly to copy from the heap, regardless of the message's left size. Since network users control the overflowed length, and the data is written to heap chunks later, attackers may achieve remote code execution by heap grooming or other exploitation methods. The bug was introduced 16 years ago in sofia-sip 1.12.4 (plus some patches through 12/21/2006) to in tree libs with git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3774 d0543943-73ff-0310-b7d9-9358b9ac24b2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

How severe is CVE-2023-22741?

CVE-2023-22741 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22741?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.