CVEvulnerability

CVE-2021-26713

6.5 MEDIUM Published 2021-02-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-19
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
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
CWE-787

Description

A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch.

Affected configurations

• digium asterisk (>= 16.0.0 < 16.16.1) • digium asterisk (>= 17.0.0 < 17.9.2) • digium asterisk (>= 18.0.0 < 18.2.1) • digium certified asterisk 16.8

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References