CVE-2020-35776
6.5
MEDIUM
CVSS 3.1
EPSS 0.08%
Description
A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.
How to fix CVE-2020-35776
To remediate CVE-2020-35776, upgrade the affected package to a fixed version below.
- Alpine/asterisk—upgrade to 16.16.1-r0 or later
- Debian/asterisk—upgrade to 1:16.16.1~dfsg-1 or later
Is CVE-2020-35776 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 16.16.1-r0
- from 0, < 1:16.16.1~dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |