CVE-2023-43785: Libx11: out-of-bounds memory access in _xkbreadkeysyms()

Published Oct 5, 2023
·
Updated

A vulnerability was found in libX11 due to a boundary condition within the XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.

Other sources

A vulnerability was found in libX11 where the vulnerability exists due to a boundary condition within the XkbReadKeySyms() function, a local user can trigger an out-of-bounds read error and read contents of memory on the system.

— Red Hat

Affected Software

9 affected componentsFixes available
redhat/libx11<1.8.7
1.8.7
X.Org libX11<1.8.7
redhat Enterprise Linux=8.0
redhat Enterprise Linux=9.0
Fedoraproject Fedora=38
debian/libx11<2:1.8.4-2+deb12u2
2:1.8.4-2+deb12u2
debian/libx11<2:1.8.7-1
2:1.8.7-1
debian/libx11<2:1.8.7-1
2:1.8.7-1
debian/libx11
2:1.8.4-2+deb12u22:1.8.12-12:1.8.14-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/libX11 to a version that resolves this vulnerability.

    Fixed in 1.8.7
  2. Upgrade

    Upgrade debian/libx11 to a version that resolves this vulnerability.

    Fixed in 2:1.8.4-2+deb12u2
  3. Upgrade

    Upgrade debian/libx11 to a version that resolves this vulnerability.

    Fixed in 2:1.8.7-1
  4. Upgrade

    Upgrade debian/libx11 to a version that resolves this vulnerability.

    Fixed in 2:1.8.4-2+deb12u2Fixed in 2:1.8.12-1Fixed in 2:1.8.14-1

Event History

Oct 10, 2023
CVE Published
via MITRE·12:26 PM
Data Sourced
via MITRE·12:26 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·01:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 8, 2026
Data Sourced
via OSV·09:47 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID for this vulnerability?

The vulnerability ID for this vulnerability is CVE-2023-43785.

2

What is the title of this vulnerability?

The title of this vulnerability is 'out-of-bounds memory access in _XkbReadKeySyms()'.

3

What is the affected software?

The affected software is libX11.

4

What is the severity of the vulnerability?

The severity of the vulnerability is not specified in the provided information.

5

What is the remedy for this vulnerability?

The remedy for this vulnerability is to update libX11 to version 2:1.6.9-2ubuntu1.6 or apply the specified remedies for other versions.

Contact

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