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

2023-01-1921:20:22

CWE-120

GitHub_M

www.cve.org

sofia-sip

sip

heap-over-flow

vulnerability

remote code execution

patch

upgrade

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.9 High

AI Score

Confidence

High

0.008 Low

EPSS

Percentile

81.6%

JSON

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.

CNA Affected

[
  {
    "vendor": "freeswitch",
    "product": "sofia-sip",
    "versions": [
      {
        "version": "< 1.13.11",
        "status": "affected"
      }
    ]
  }
]