Executive Summary

Informations
Name CVE-2021-37706 First vendor Publication 2021-12-22
Vendor Cve Last vendor Modification 2023-08-30

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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 STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37706

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-191 Integer Underflow (Wrap or Wraparound)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 35
Application 1
Application 1
Os 2

Sources (Detail)

Source Url
CONFIRM https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984
DEBIAN https://www.debian.org/security/2022/dsa-5285
FULLDISC http://seclists.org/fulldisclosure/2022/Mar/0
GENTOO https://security.gentoo.org/glsa/202210-37
MISC http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisor...
https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc...
MLIST https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html

Alert History

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Date Informations
2023-08-30 09:27:41
  • Multiple Updates
2023-02-02 21:27:41
  • Multiple Updates
2022-11-18 21:27:29
  • Multiple Updates
2022-11-17 17:27:33
  • Multiple Updates
2022-11-17 00:27:30
  • Multiple Updates
2022-11-01 05:27:50
  • Multiple Updates
2022-04-25 21:23:12
  • Multiple Updates
2022-03-28 21:23:12
  • Multiple Updates
2022-03-10 21:23:19
  • Multiple Updates
2022-03-05 00:23:12
  • Multiple Updates
2022-01-04 05:22:54
  • Multiple Updates
2021-12-22 21:22:56
  • First insertion