9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.136 Low
EPSS
Percentile
95.5%
Severity: High
Date : 2021-05-19
CVE-ID : CVE-2021-31535
Package : libx11
Type : insufficient validation
Remote : No
Link : https://security.archlinux.org/AVG-1968
The package libx11 before version 1.7.1-1 is vulnerable to insufficient
validation.
Upgrade to 1.7.1-1.
The problem has been fixed upstream in version 1.7.1.
None.
A security issue has been found in libx11 before version 1.7.1.
XLookupColor() and other X libraries function lack proper validation of
the length of their string parameters. If those parameters can be
controlled by an external application (for instance a color name that
can be emitted via a terminal control sequence) it can lead to the
emission of extra X protocol requests to the X server.
An attacker could emit arbitrary X protocol requests to the X server
through crafted string parameters.
https://unparalleled.eu/publications/2021/advisory-unpar-2021-1.txt
https://unparalleled.eu/blog/2021/20210518-using-xterm-to-navigate-the-huge-color-space/
https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/8d2e02ae650f00c4a53deb625211a0527126c605
https://security.archlinux.org/CVE-2021-31535
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.136 Low
EPSS
Percentile
95.5%