CVE-2021-43804
PJSIP RTCP BYE Out-of-Bound Read Vulnerability
Description
PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming RTCP BYE message contains a reason's length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. There are no known workarounds.
INFO
Published Date :
Dec. 22, 2021, 6:15 p.m.
Last Modified :
Aug. 30, 2023, 1:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-43804.
| URL | Resource |
|---|---|
| https://github.com/pjsip/pjproject/commit/8b621f192cae14456ee0b0ade52ce6c6f258af1e | Patch Third Party Advisory |
| https://github.com/pjsip/pjproject/security/advisories/GHSA-3qx3-cg72-wrh9 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html | |
| https://security.gentoo.org/glsa/202210-37 | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5285 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-43804 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-43804 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Aug. 30, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5285 No Types Assigned https://www.debian.org/security/2022/dsa-5285 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 18, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5285 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 17, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html [No Types Assigned] -
Modified Analysis by [email protected]
Nov. 16, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202210-37 No Types Assigned https://security.gentoo.org/glsa/202210-37 Third Party Advisory Added CWE NIST CWE-125 -
CVE Modified by [email protected]
Oct. 31, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202210-37 [No Types Assigned] -
Modified Analysis by [email protected]
Sep. 10, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 28, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 03, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Changed Reference Type https://github.com/pjsip/pjproject/commit/8b621f192cae14456ee0b0ade52ce6c6f258af1e No Types Assigned https://github.com/pjsip/pjproject/commit/8b621f192cae14456ee0b0ade52ce6c6f258af1e Patch, Third Party Advisory Changed Reference Type https://github.com/pjsip/pjproject/security/advisories/GHSA-3qx3-cg72-wrh9 No Types Assigned https://github.com/pjsip/pjproject/security/advisories/GHSA-3qx3-cg72-wrh9 Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* versions up to (including) 2.11.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-43804 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-43804
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.43 }} 0.03%
score
0.74788
percentile