CVE-2020-14399

moderate-risk

Published 2020-06-17

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.

Do I need to act?

2.5% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (8)

Libvncserver

Debian Linux

Leap

Ubuntu Linux

Affected Vendors

Debian Canonical Opensuse Libvncserver Project

References (18)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1860354

Patch https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a61817...

Release Notes https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServe...

Mailing List https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html

Mailing List https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html

Third Party Advisory https://usn.ubuntu.com/4434-1/