CVE-2021-21375
PJSIP Denial of Service (DoS) Crash
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 PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.
INFO
Published Date :
March 10, 2021, 11:15 p.m.
Last Modified :
Oct. 21, 2022, 10:40 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2021-21375.
| URL | Resource |
|---|---|
| https://github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365 | Patch Third Party Advisory |
| https://github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvp | Exploit Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/04/msg00023.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/05/msg00020.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202107-42 | 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-2021-21375 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21375 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 -
Reanalysis by [email protected]
Oct. 21, 2022
Action Type Old Value New Value Removed CWE NIST CWE-400 Added CWE NIST CWE-754 -
Modified Analysis by [email protected]
Sep. 02, 2021
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202107-42 No Types Assigned https://security.gentoo.org/glsa/202107-42 Third Party Advisory Added CWE NIST CWE-400 Changed CPE Configuration OR *cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* versions up to (including) 2.1.0 OR *cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* versions up to (including) 2.10 -
CVE Modified by [email protected]
Jul. 20, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202107-42 [No Types Assigned] -
Modified Analysis by [email protected]
May. 26, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/04/msg00023.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/04/msg00023.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00020.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00020.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 23, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00020.html [No Types Assigned] -
CVE Modified by [email protected]
Apr. 23, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/04/msg00023.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 18, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365 No Types Assigned https://github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365 Patch, Third Party Advisory Changed Reference Type https://github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvp No Types Assigned https://github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvp Exploit, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* versions up to (including) 2.1.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21375 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-2021-21375
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.21 }} 0.06%
score
0.58975
percentile