CVE-2018-20021
7.5
HIGH
CVSS 3.1
EPSS 2.6%
Description
LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability allows attacker to consume excessive amount of resources like CPU and RAM
How to fix CVE-2018-20021
To remediate CVE-2018-20021, upgrade the affected package to a fixed version below.
- Debian/libvncserver—upgrade to 0.9.11+dfsg-1.2 or later
- Debian/ssvnc—upgrade to 1.0.29-5 or later
- —upgrade to 1:1.3.9-9.1 or later
- —upgrade to 4.1.4+repack1-1 or later
Is CVE-2018-20021 being exploited?
Low — EPSS is 2.6%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 0.9.11+dfsg-1.2
- from 0, < 1.0.29-5
- from 0, < 1:1.3.9-9.1
- from 0, < 4.1.4+repack1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |