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Vulnerability · Published Jan 19, 2023 · Assigned by GitHub_M

CVE-2023-22741heap-over-flow in stun_parse_attribute in sofia-sip

Critical 9.8

In plain English

A critical-severity buffer overflow in sofia-sip from freeswitch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)2.5%top 15.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20sofia-sip1.13.11-r0ALPINE-CVE-2023-22741
Alpine:v3.21sofia-sip1.13.11-r0ALPINE-CVE-2023-22741
Alpine:v3.22sofia-sip1.13.11-r0ALPINE-CVE-2023-22741
Alpine:v3.23sofia-sip1.13.11-r0ALPINE-CVE-2023-22741
Alpine:v3.24sofia-sip1.13.11-r0ALPINE-CVE-2023-22741
Debian:12sofia-sip1.12.11+20110422.1+1e14eea~dfsg-4DEBIAN-CVE-2023-22741
Debian:13sofia-sip1.12.11+20110422.1+1e14eea~dfsg-4DEBIAN-CVE-2023-22741
Debian:14sofia-sip1.12.11+20110422.1+1e14eea~dfsg-4DEBIAN-CVE-2023-22741
Ubuntu:22.04:LTSsofia-sip1.12.11+20110422.1-2.1+deb10u3ubuntu0.22.04.1UBUNTU-CVE-2023-22741
Ubuntu:22.04:LTSsofia-sip1.12.11+20110422.1-2.1+deb10u3ubuntu0.22.04.1USN-5932-1

Affected products (as reported)

VendorProductVersions
freeswitch sofia-sip < 1.13.11

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References