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debianDebianDEBIAN:DLA-2666-1:1352A
HistoryMay 24, 2021 - 7:01 a.m.

[SECURITY] [DLA 2666-1] libx11 security update

2021-05-2407:01:12
lists.debian.org
80

7.5 High

CVSS2

Attack Vector

NETWORK

Attack 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

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

8 High

AI Score

Confidence

Low

0.116 Low

EPSS

Percentile

95.3%


Debian LTS Advisory DLA-2666-1 [email protected]
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
May 24, 2021 https://wiki.debian.org/LTS


Package : libx11
Version : 2:1.6.4-3+deb9u4
CVE ID : CVE-2021-31535
Debian Bug : 988737

Roman Fiedler found that libX11, the X11 protocol client library, was
vulnerable to protocol command injection due to insufficient validation
of arguments to some functions.

For Debian 9 stretch, this problem has been fixed in version
2:1.6.4-3+deb9u4.

We recommend that you upgrade your libx11 packages.

For the detailed security status of libx11 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libx11

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

7.5 High

CVSS2

Attack Vector

NETWORK

Attack 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

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

8 High

AI Score

Confidence

Low

0.116 Low

EPSS

Percentile

95.3%