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HistoryMar 29, 2023 - 12:59 p.m.

[SECURITY] [DSA 5380-1] xorg-server security update

2023-03-2912:59:00
lists.debian.org
13
debian
user-after-free
xorg-server
composite extension
privilege escalation
security update

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

8.2 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.9%


Debian Security Advisory DSA-5380-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
March 29, 2023 https://www.debian.org/security/faq


Package : xorg-server
CVE ID : CVE-2023-1393

Jan-Niklas Sohn discovered that a user-after-free flaw in the Composite
extension of the X.org X server may result in privilege escalation if
the X server is running under the root user.

For the stable distribution (bullseye), this problem has been fixed in
version 2:1.20.11-1+deb11u6.

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]

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

8.2 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.9%