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  • #12035

Closed
Open
Created Oct 22, 2020 by Alicha CH@alichaReporter5 of 5 tasks completed5/5 tasks

xorg-server: Multiple vulnerabilities CVE-2020-14345, CVE-2020-14346, CVE-2020-14347, CVE-2020-14361, CVE-2020-14362

CVE-2020-14345: Out-Of-Bounds access in XkbSetNames function

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Out-Of-Bounds access in XkbSetNames function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Reference:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html

Patch:

https://gitlab.freedesktop.org/xorg/xserver/-/commit/f7cd1276bbd4fe3a9700096dec33b52b8440788d

CVE-2020-14346: Integer underflow in the X input extension protocol

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.

Reference:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html

Patch:

https://gitlab.freedesktop.org/xorg/xserver/-/commit/c940cc8b6c0a2983c1ec974f1b3f019795dd4cff

CVE-2020-14361: XkbSelectEvents Integer Underflow Privilege Escalation Vulnerability

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability

Reference:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html

Patch:

https://gitlab.freedesktop.org/xorg/xserver/-/commit/144849ea27230962227e62a943b399e2ab304787

CVE-2020-14362: XRecordRegisterClients Integer Underflow Privilege Escalation Vulnerability

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability.

Reference:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html

Patch:

https://gitlab.freedesktop.org/xorg/xserver/-/commit/2902b78535ecc6821cc027351818b28a5c7fdbdc

Affected branches:

  • master (f879bf5f)
  • 3.12-stable (f2a2ffc3)
  • 3.11-stable
  • 3.10-stable
  • 3.9-stable
Edited Oct 22, 2020 by Leo
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