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

Quick assessment

Affected
freeswitch sofia-sip
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sofia-SIP是freeswitch个人开发者的一个开源的 SIP 用户代理库，符合 IETF RFC3261 规范。 Sofia-SIP存在缓冲区错误漏洞，该漏洞源于在处理STUN数据包时缺少消息长度和属性长度检查。

CVSS 9.8 · Critical EPSS 2.38% · P84
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I. Basic Information for CVE-2023-22741

Vulnerability Information
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Vulnerability Title
heap-over-flow in stun_parse_attribute in sofia-sip
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Sofia-SIP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sofia-SIP是freeswitch个人开发者的一个开源的 SIP 用户代理库，符合 IETF RFC3261 规范。 Sofia-SIP存在缓冲区错误漏洞，该漏洞源于在处理STUN数据包时缺少消息长度和属性长度检查。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
freeswitch sofia-sip < 1.13.11 -

II. Public POCs for CVE-2023-22741

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III. Intelligence Information for CVE-2023-22741

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Patches & Fixes for CVE-2023-22741 (1)

Vendor Advisories for CVE-2023-22741 (2)

IV. Related Vulnerabilities

Same product: sofia-sip
Same vendor: freeswitch
Same weakness: CWE-120

V. Comments for CVE-2023-22741

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