High severity · published Mar 14, 2023
CVE-2023-27585
PJSIP is a free and open source multimedia communication library written in C
7.5
CVSS
2.3%
EPSS
No
On KEV
Description
PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.13 and prior affects applications that use PJSIP DNS resolver. It doesn't affect PJSIP users who do not utilise PJSIP DNS resolver. This vulnerability is related to CVE-2022-24793. The difference is that this issue is in parsing the query record `parse_query()`, while the issue in CVE-2022-24793 is in `parse_rr()`. A patch is available as commit `d1c5e4d` in the `master` branch. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver implementation instead.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PJ
Pjsip · Teluu
before 2.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-27585
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-27585
Patch
https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5
Vendor Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4
Patch
https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/04/msg00020.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
www.debian.org
https://www.debian.org/security/2023/dsa-5438
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