MGASA-2023-0287 - Updated libX11 packages fix security vulnerabilities

Publication date: 13 Oct 2023
URL: https://advisories.mageia.org/MGASA-2023-0287.html
Type: security
Affected Mageia releases: 8, 9
CVE: CVE-2023-43785,
     CVE-2023-43786,
     CVE-2023-43787

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. (CVE-2023-43785)

A vulnerability was found in libX11 due to an infinite loop within the
PutSubImage() function. This flaw allows a local user to consume all
available system resources and cause a denial of service condition.
(CVE-2023-43786)

A vulnerability was found in libX11 due to an integer overflow within
the XCreateImage() function. This flaw allows a local user to trigger an
integer overflow and execute arbitrary code with elevated privileges.
(CVE-2023-43787)

References:
- https://bugs.mageia.org/show_bug.cgi?id=32358
- https://www.openwall.com/lists/oss-security/2023/10/03/1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43785
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43786
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43787

SRPMS:
- 9/core/libx11-1.8.6-1.1.mga9
- 8/core/libx11-1.7.0-1.5.mga8

Mageia 2023-0287: libX11 security update

A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function

Summary

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. (CVE-2023-43785)
A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition. (CVE-2023-43786)
A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges. (CVE-2023-43787)

References

- https://bugs.mageia.org/show_bug.cgi?id=32358

- https://www.openwall.com/lists/oss-security/2023/10/03/1

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43785

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43786

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43787

Resolution

MGASA-2023-0287 - Updated libX11 packages fix security vulnerabilities

SRPMS

- 9/core/libx11-1.8.6-1.1.mga9

- 8/core/libx11-1.7.0-1.5.mga8

Severity
Publication date: 13 Oct 2023
URL: https://advisories.mageia.org/MGASA-2023-0287.html
Type: security
CVE: CVE-2023-43785, CVE-2023-43786, CVE-2023-43787

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