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CVE-2020-14346

HIGH

7.8

Description

A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published9/15/2020

Last Modified8/29/2025

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxredhat:enterprise_linuxx.org:x_server

Weaknesses (CWE)

CWE-191CWE-191

References

https://bugzilla.redhat.com/show_bug.cgi?id=1862246(secalert@redhat.com)

https://lists.x.org/archives/xorg-announce/2020-August/003058.html(secalert@redhat.com)

https://security.gentoo.org/glsa/202012-01(secalert@redhat.com)

https://usn.ubuntu.com/4488-2/(secalert@redhat.com)

https://www.zerodayinitiative.com/advisories/ZDI-20-1417/(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1862246(af854a3a-2127-422b-91ae-364da2661108)

https://lists.x.org/archives/xorg-announce/2020-August/003058.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/202012-01(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/4488-2/(af854a3a-2127-422b-91ae-364da2661108)

https://www.zerodayinitiative.com/advisories/ZDI-20-1417/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.