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ubuntuUbuntuUSN-6555-2
HistoryDec 13, 2023 - 12:00 a.m.

X.Org X Server vulnerabilities

2023-12-1300:00:00
ubuntu.com
59
ubuntu 16.04 esm
ubuntu 18.04 esm
x.org x11 server
x server vulnerabilities
memory handling issue
privilege escalation
information disclosure

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

8.7 High

AI Score

Confidence

High

0.273 Low

EPSS

Percentile

96.8%

JSON

Releases

  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • xorg-server - X.Org X11 server

Details

USN-6555-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB
button actions. An attacker could possibly use this issue to cause the X
Server to crash, execute arbitrary code, or escalate privileges.
(CVE-2023-6377)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the RRChangeOutputProperty and
RRChangeProviderProperty APIs. An attacker could possibly use this issue to
cause the X Server to crash, or obtain sensitive information.
(CVE-2023-6478)

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchxserver-xorg-core< 2:1.19.6-1ubuntu4.15+esm3UNKNOWN
Ubuntu18.04noarchxdmx< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxdmx-dbgsym< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxdmx-tools< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxdmx-tools-dbgsym< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxmir< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxmir-dbgsym< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxnest< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxnest-dbgsym< 2:1.19.6-1ubuntu4.15UNKNOWN
Ubuntu18.04noarchxorg-server-source< 2:1.19.6-1ubuntu4.15UNKNOWN
Rows per page:
1-10 of 521

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oraclelinux
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xorg-x11-server security update
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tigervnc security update
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xorg-server, xwayland vulnerabilities
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Fedora: Security Advisory for tigervnc (FEDORA-2023-ec02e360af)
2024-01-18 00:00:00
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2023-12-16 00:00:00
Slackware: Security Advisory (SSA:2023-347-01)
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fedora
fedora
[SECURITY] Fedora 38 Update: xorg-x11-server-1.20.14-28.fc38
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[SECURITY] Fedora 39 Update: xorg-x11-server-Xwayland-23.2.3-1.fc39
2023-12-19 01:12:16
[SECURITY] Fedora 39 Update: xorg-x11-server-1.20.14-28.fc39
2023-12-15 01:33:14
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ROS-20240408-08
2024-04-08 00:00:00
redhat
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(RHSA-2024:0020) Important: tigervnc security update
2024-01-02 06:54:35
(RHSA-2024:0015) Important: tigervnc security update
2024-01-02 06:53:55
(RHSA-2024:0018) Important: tigervnc security update
2024-01-02 06:54:05
almalinux
almalinux
Important: tigervnc security update
2024-01-02 00:00:00
Important: tigervnc security update
2024-01-02 00:00:00
Moderate: xorg-x11-server security update
2024-05-22 00:00:00
debian
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[SECURITY] [DSA 5576-1] xorg-server security update
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2023-12-13 08:05:16
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2023-12-13 00:00:00
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freebsd
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amazon
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Important: xorg-x11-server
2024-01-03 21:04:00
Important: xorg-x11-server
2024-01-03 22:37:00
slackware
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[slackware-security] xorg-server
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[slackware-security] tigervnc
2024-01-21 20:53:54
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Advisory ROSA-SA-2024-2324
2024-01-23 12:14:57
centos
centos
tigervnc security update
2024-01-12 19:01:36
xorg security update
2024-01-12 19:00:25
mageia
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Updated x11-server and tigervnc packages fix security vulnerabilities
2024-01-15 01:23:43
alpinelinux
alpinelinux
CVE-2023-6377
2023-12-13 07:15:30
CVE-2023-6478
2023-12-13 07:15:31
zdi
zdi
X.Org Server RecalculateMasterButtons Out-Of-Bounds Access Local Privilege Escalation Vulnerability
2024-01-04 00:00:00
X.Org Server DeepCopyPointerClasses Out-Of-Bounds Access Local Privilege Escalation Vulnerability
2024-01-04 00:00:00
X.Org Server RRChangeOutputProperty Integer Overflow Information Disclosure Vulnerability
2024-01-04 00:00:00
cvelist
cvelist
CVE-2023-6377 Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
2023-12-13 06:27:40
CVE-2023-6478 Xorg-x11-server: out-of-bounds memory read in rrchangeoutputproperty and rrchangeproviderproperty
2023-12-13 06:27:41
cbl_mariner
cbl_mariner
CVE-2023-6377 affecting package xorg-x11-server for versions less than 1.20.10-5
2024-01-04 19:54:01
CVE-2023-6478 affecting package xorg-x11-server for versions less than 1.20.10-5
2024-01-04 19:54:01
redhatcve
redhatcve
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CVE-2023-6478
2023-12-13 06:27:26
nvd
nvd
CVE-2023-6377
2023-12-13 07:15:30
CVE-2023-6478
2023-12-13 07:15:31
veracode
veracode
Remote Code Execution
2023-12-15 07:04:27
Integer Overflow
2023-12-15 07:30:42
cve
cve
CVE-2023-6478
2023-12-13 07:15:31
CVE-2023-6377
2023-12-13 07:15:30
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ubuntucve
CVE-2023-6377
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CVE-2023-6478
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prion
prion
Out-of-bounds
2023-12-13 07:15:00
Integer overflow
2023-12-13 07:15:00
debiancve
debiancve
CVE-2023-6478
2023-12-13 07:15:31
CVE-2023-6377
2023-12-13 07:15:30
gentoo
gentoo
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2024-01-31 00:00:00

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

8.7 High

AI Score

Confidence

High

0.273 Low

EPSS

Percentile

96.8%

JSON
Related for USN-6555-2
nessus69oraclelinux8osv15openvas39fedora6redos1redhat14almalinux6debian4ubuntu2freebsd1amazon2slackware2rosalinux1centos2mageia1alpinelinux2zdi3cvelist2cbl_mariner2redhatcve2nvd2veracode2cve2ubuntucve2prion2debiancve2gentoo1