PJSIP up to 2.12 DNS Resolution buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in PJSIP up to 2.12. Affected by this vulnerability is an unknown functionality of the component DNS Resolution Handler. This manipulation causes buffer overflow. This vulnerability appears as CVE-2022-24793. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in PJSIP up to 2.12. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component DNS Resolution Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. The summary by CVE is:

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record `parse_rr()`, while the issue in CVE-2023-27585 is in `parse_query()`. A patch is available in the `master` branch of the `pjsip/pjproject` GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver instead.

The weakness was presented 04/06/2022 as GHSA-p6g5-v97c-w5q4. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2022-24793 since 02/10/2022. The technical details are unknown and an exploit is not publicly available.

Applying the patch 9fae8f43accef8ea65d4a8ae9cdf297c46cfe29a is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-29601). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 9fae8f43accef8ea65d4a8ae9cdf297c46cfe29a

Timelineinfo

02/10/2022 🔍
04/06/2022 +54 days 🔍
04/06/2022 +0 days 🔍
05/05/2026 +1490 days 🔍

Sourcesinfo

Advisory: GHSA-p6g5-v97c-w5q4
Status: Confirmed

CVE: CVE-2022-24793 (🔍)
GCVE (CVE): GCVE-0-2022-24793
GCVE (VulDB): GCVE-100-196603
EUVD: 🔍

Entryinfo

Created: 04/06/2022 21:39
Updated: 05/05/2026 04:14
Changes: 04/06/2022 21:39 (50), 04/08/2022 16:16 (1), 11/05/2025 05:47 (34), 05/05/2026 04:14 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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