CVE-2017-18922
9.8
CRITICAL
CVSS 3.1
EPSS 6.9%
Description
It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.
How to fix CVE-2017-18922
To remediate CVE-2017-18922, upgrade the affected package to a fixed version below.
- Debian/libvncserver—upgrade to 0.9.12+dfsg-3 or later
Is CVE-2017-18922 being exploited?
Moderate — EPSS is 6.9%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 0.9.12+dfsg-3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |