Vulnerability Database

299,184

Total vulnerabilities in the database

CVE-2021-46837

res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.

  • Published: Aug 30, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-46837
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
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
digium / asterisk 18.0.0 18.2.2
digium / asterisk 17.0.0 17.9.3
digium / asterisk 16.0.0 16.16.2
asterisk / certified_asterisk 16.8.0 16.8.0.x
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x
debian / debian_linux 11.0 11.0.x