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ubuntuUbuntuUSN-4905-1
HistoryApr 13, 2021 - 12:00 a.m.

X.Org X Server vulnerability

2021-04-1300:00:00
ubuntu.com
91

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

8.2 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.3%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • xorg-server - X.Org X11 server
  • xorg-server-hwe-16.04 - X.Org X11 server
  • xorg-server-hwe-18.04 - X.Org X11 server

Details

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain lengths of XInput extension ChangeFeedbackControl requests. An
attacker could use this issue to cause the server to crash, resulting in a
denial of service, or possibly execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchxserver-xorg-core< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxdmx< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxdmx-dbgsym< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxdmx-tools< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxdmx-tools-dbgsym< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxnest< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxnest-dbgsym< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxorg-server-source< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxserver-common< 2:1.20.9-2ubuntu1.3UNKNOWN
Ubuntu20.10noarchxserver-xephyr< 2:1.20.9-2ubuntu1.3UNKNOWN
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1-10 of 1101

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2021-06-09 00:00:00
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Privilege Escalation
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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

8.2 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.3%

JSON
Related for USN-4905-1
nessus28osv5openvas26cve1fedora4veracode1amazon2oraclelinux1debian3alpinelinux1gentoo1ubuntu1redhatcve1cvelist1suse1nvd1prion1debiancve1ubuntucve1redhat1zdi1centos1mageia1