Debian Linux
CVE-2022-24793
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
PJSIP is a free and open source multimedia communication library written in C. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Buffer Copy without Size Check vulnerability could allow attackers to overflow a buffer to corrupt adjacent memory.
Technical ContextAI
This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. 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. Affected products include: Pjsip, Debian Debian Linux.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.
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External POC / Exploit Code
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