// For flags

CVE-2022-24793

Potential heap buffer overflow when parsing DNS packets in PJSIP

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

PJSIP es una biblioteca de comunicación multimedia gratuita y de código abierto escrita en C. Una vulnerabilidad de desbordamiento de búfer en versiones 2.12 y anteriores afecta a las aplicaciones que usan la resolución de DNS de PJSIP. No afecta a usuarios de PJSIP que usan una resolución externa. Se presenta un parche disponible en la rama "master" del repositorio GitHub "pjsip/pjproject". Una mitigación es deshabilitar la resolución de DNS en la configuración de PJSIP (estableciendo "nameserver_count" a cero) o usar una resolución externa en su lugar

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-02-10 CVE Reserved
  • 2022-04-06 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-11-10 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Pjsip
Search vendor "Pjsip"
 Pjsip
Search vendor "Pjsip" for product "Pjsip"
 <= 2.12
Search vendor "Pjsip" for product "Pjsip" and version " <= 2.12"
-
Affected
Debian
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 Debian Linux
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 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Debian
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 Debian Linux
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 10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
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 Debian Linux
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 11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected