CVE-2021-32558
asterisk - security update
7.5
HIGH
CVSS 3.1
EPSS 2.9%
Description
An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and 18.x before 18.5.1, and Certified Asterisk before 16.8-cert10. If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur.
How to fix CVE-2021-32558
To remediate CVE-2021-32558, upgrade the affected package to a fixed version below.
- —upgrade to 16.6.2-r1 or later
- —upgrade to 1:16.16.1~dfsg-1+deb11u1 or later
- —upgrade to 1:13.14.1~dfsg-2+deb9u5 or later
- —upgrade to 1:16.16.1~dfsg-1+deb11u1 or later
Is CVE-2021-32558 being exploited?
Low — EPSS is 2.9%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 16.6.2-r1
- from 0, < 1:16.16.1~dfsg-1+deb11u1
- from 0, < 1:13.14.1~dfsg-2+deb9u5
- from 0, < 1:16.16.1~dfsg-1+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |