Vulnerability Database

289,697

Total vulnerabilities in the database

CVE-2021-37706

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.

  • Published: Dec 22, 2021
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-37706
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 9.3
  • AV:N/AC:M/Au:N/C:C/I:C/A:C

CWEs:

Software From Fixed in
teluu / pjsip - 2.11.1.x
asterisk / certified_asterisk 16.8.0-cert12 16.8.0-cert12.x
asterisk / certified_asterisk 16.8.0-cert11 16.8.0-cert11.x
asterisk / certified_asterisk 16.8.0-cert10 16.8.0-cert10.x
asterisk / certified_asterisk 16.8.0-cert9 16.8.0-cert9.x
asterisk / certified_asterisk 16.8.0-cert8 16.8.0-cert8.x
asterisk / certified_asterisk 16.8.0-cert7 16.8.0-cert7.x
asterisk / certified_asterisk 16.8.0-cert6 16.8.0-cert6.x
asterisk / certified_asterisk 16.8.0-cert5 16.8.0-cert5.x
asterisk / certified_asterisk 16.8.0-cert4 16.8.0-cert4.x
asterisk / certified_asterisk 16.8.0-cert3 16.8.0-cert3.x
asterisk / certified_asterisk 16.8.0-cert2 16.8.0-cert2.x
asterisk / certified_asterisk 16.8.0-cert1 16.8.0-cert1.x
asterisk / certified_asterisk - 16.8.0
asterisk / certified_asterisk 16.8.0 16.8.0.x
sangoma / asterisk 16.0.0 16.24.1
sangoma / asterisk 19.0.0 19.2.1
sangoma / asterisk 18.0.0 18.10.1
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x