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 Security Advisory DSA-4920-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
May 24, 2021 https://www.debian.org/security/faq
Package : libx11
CVE ID : CVE-2021-31535
Debian Bug : 988737
Roman Fiedler reported that missing length validation in various
functions provided by libx11, the X11 client-side library, allow
to inject X11 protocol commands on X clients, leading to
authentication bypass, denial of service or potentially the
execution of arbitrary code.
For the stable distribution (buster), this problem has been fixed in
version 2:1.6.7-1+deb10u2.
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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | mipsel | libx11-6-udeb | < 2:1.6.7-1+deb10u2 | libx11-6-udeb_2:1.6.7-1+deb10u2_mipsel.deb |
Debian | 10 | amd64 | libx11-dev | < 2:1.6.7-1+deb10u2 | libx11-dev_2:1.6.7-1+deb10u2_amd64.deb |
Debian | 10 | s390x | libx11-6-udeb | < 2:1.6.7-1+deb10u2 | libx11-6-udeb_2:1.6.7-1+deb10u2_s390x.deb |
Debian | 10 | armel | libx11-6-udeb | < 2:1.6.7-1+deb10u2 | libx11-6-udeb_2:1.6.7-1+deb10u2_armel.deb |
Debian | 9 | armel | libx11-xcb-dev | < 2:1.6.4-3+deb9u4 | libx11-xcb-dev_2:1.6.4-3+deb9u4_armel.deb |
Debian | 9 | amd64 | libx11-6-udeb | < 2:1.6.4-3+deb9u4 | libx11-6-udeb_2:1.6.4-3+deb9u4_amd64.deb |
Debian | 10 | mipsel | libx11-xcb1 | < 2:1.6.7-1+deb10u2 | libx11-xcb1_2:1.6.7-1+deb10u2_mipsel.deb |
Debian | 10 | i386 | libx11-xcb1-dbgsym | < 2:1.6.7-1+deb10u2 | libx11-xcb1-dbgsym_2:1.6.7-1+deb10u2_i386.deb |
Debian | 10 | armhf | libx11-6-dbgsym | < 2:1.6.7-1+deb10u2 | libx11-6-dbgsym_2:1.6.7-1+deb10u2_armhf.deb |
Debian | 10 | armhf | libx11-xcb-dev | < 2:1.6.7-1+deb10u2 | libx11-xcb-dev_2:1.6.7-1+deb10u2_armhf.deb |
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%