VDB-216681 · CVE-2022-23547 · GHSA-9pfh-r8x4-w26w

PJSIP STUN Message Parser heap-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in PJSIP and classified as critical. This vulnerability affects unknown code of the component STUN Message Parser. Performing a manipulation results in heap-based overflow. This vulnerability is identified as CVE-2022-23547. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in PJSIP (the affected version unknown). It has been classified as critical. This affects an unknown part of the component STUN Message Parser. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. This issue is similar to GHSA-9pfh-r8x4-w26w. Possible buffer overread when parsing a certain STUN message. The vulnerability affects applications that uses STUN including PJNATH and PJSUA-LIB. The patch is available as commit in the master branch.

The weakness was released 12/23/2022 as GHSA-9pfh-r8x4-w26w. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-23547 since 01/19/2022. Neither technical details nor an exploit are publicly available.

Applying the patch bc4812d31a67d5e2f973fbfaf950d6118226cf36 is able to eliminate this problem. The bugfix is ready for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

PJSIP

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: bc4812d31a67d5e2f973fbfaf950d6118226cf36

Timelineinfo

01/19/2022 🔍
12/23/2022 +338 days 🔍
12/23/2022 +0 days 🔍
11/05/2025 +1048 days 🔍

Sourcesinfo

Advisory: GHSA-9pfh-r8x4-w26w
Status: Confirmed

CVE: CVE-2022-23547 (🔍)
GCVE (CVE): GCVE-0-2022-23547
GCVE (VulDB): GCVE-100-216681

Entryinfo

Created: 12/23/2022 20:49
Updated: 11/05/2025 14:20
Changes: 12/23/2022 20:49 (50), 11/05/2025 14:20 (27)
Complete: 🔍
Cache ID: 216:764:103