VDB
CVE-2021-26713
CVE-2021-26713
PUBLISHED
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.
EPSS 0.13% · 31.8th percentile
Risk Scores
EPSS Score
0.13%
31.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | asterisk | 0, 1:18.10.0~dfsg+~cs6.10.40431411-2, * |
| Ubuntu:24.04:LTS | asterisk | *, 1:20.5.0~dfsg+~cs6.13.40431414-1, 1:20.5.1~dfsg+~cs6.13.40431414-1 |
| Ubuntu:25.10 | asterisk | *, 1:22.5.2~dfsg+~cs6.15.60671435-1, 1:22.4.1~dfsg+~cs6.15.60671435-2 |
Timeline
- Feb 19, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 22, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 25, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 27, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 2, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-26713 third-party-advisory
- https://downloads.asterisk.org/pub/security/ third-party-advisory
- https://downloads.asterisk.org/pub/security/AST-2021-004.html third-party-advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-29205 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-26713 third-party-advisory