7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.6 High
AI Score
Confidence
High
0.0005 Low
EPSS
Percentile
18.1%
Debian Security Advisory DSA-5027-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
December 21, 2021 https://www.debian.org/security/faq
Package : xorg-server
CVE ID : CVE-2021-4008 CVE-2021-4009 CVE-2021-4010 CVE-2021-4011
Jan-Niklas Sohn discovered that multiple input validation failures in X
server extensions of the X.org X server may result in privilege
escalation if the X server is running privileged.
For the oldstable distribution (buster), these problems have been fixed
in version 2:1.20.4-1+deb10u4.
For the stable distribution (bullseye), these problems have been fixed in
version 2:1.20.11-1+deb11u1.
We recommend that you upgrade your xorg-server packages.
For the detailed security status of xorg-server please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/xorg-server
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 | i386 | xserver-xorg-legacy-dbgsym | < 2:1.20.4-1+deb10u4 | xserver-xorg-legacy-dbgsym_2:1.20.4-1+deb10u4_i386.deb |
Debian | 10 | armel | xvfb-dbgsym | < 2:1.20.4-1+deb10u4 | xvfb-dbgsym_2:1.20.4-1+deb10u4_armel.deb |
Debian | 10 | arm64 | xserver-xorg-core-udeb | < 2:1.20.4-1+deb10u4 | xserver-xorg-core-udeb_2:1.20.4-1+deb10u4_arm64.deb |
Debian | 11 | armel | xserver-xorg-legacy-dbgsym | < 2:1.20.11-1+deb11u1 | xserver-xorg-legacy-dbgsym_2:1.20.11-1+deb11u1_armel.deb |
Debian | 11 | i386 | xdmx | < 2:1.20.11-1+deb11u1 | xdmx_2:1.20.11-1+deb11u1_i386.deb |
Debian | 10 | s390x | xnest-dbgsym | < 2:1.20.4-1+deb10u4 | xnest-dbgsym_2:1.20.4-1+deb10u4_s390x.deb |
Debian | 11 | ppc64el | xdmx-tools-dbgsym | < 2:1.20.11-1+deb11u1 | xdmx-tools-dbgsym_2:1.20.11-1+deb11u1_ppc64el.deb |
Debian | 11 | armhf | xwayland | < 2:1.20.11-1+deb11u1 | xwayland_2:1.20.11-1+deb11u1_armhf.deb |
Debian | 11 | i386 | xserver-xorg-legacy | < 2:1.20.11-1+deb11u1 | xserver-xorg-legacy_2:1.20.11-1+deb11u1_i386.deb |
Debian | 10 | mipsel | xwayland | < 2:1.20.4-1+deb10u4 | xwayland_2:1.20.4-1+deb10u4_mipsel.deb |
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.6 High
AI Score
Confidence
High
0.0005 Low
EPSS
Percentile
18.1%