CVEvulnerability

CVE-2021-46837

6.5 MEDIUM Published 2022-08-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-08-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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.

Affected configurations

• asterisk certified asterisk 16.8.0 • digium asterisk (>= 16.0.0 < 16.16.2) • digium asterisk (>= 17.0.0 < 17.9.3) • digium asterisk (>= 18.0.0 < 18.2.2) • debian debian linux 9.0 • debian debian linux 10.0 • debian debian linux 11.0

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References