CVE-2022-24793CWE-120

Potential heap buffer overflow when parsing DNS packets in PJSIP

High · published April 6, 2022

CVSS v3.1
7.5
EPSS
2%
Percentile
82.2
In the wild
Unconfirmed
What it 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 record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02176 · 82.2th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2022-04-06T00:00Z
EPSS history
Timeline
  • 06 APR 00:00Z
    Potential heap buffer overflow when parsing DNS packets in PJSIP
    cvelistv5