high
7.8
CWE
190 122
Advisory Published
CVE Published
Updated

CVE-2023-43787: Libx11: integer overflow in xcreateimage() leading to a heap overflow

First published: Tue Oct 03 2023(Updated: )

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.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
X.Org libX11<1.8.7
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
Fedoraproject Fedora=38
debian/libx11<=2:1.6.7-1+deb10u2
2:1.6.7-1+deb10u4
2:1.7.2-1+deb11u2
2:1.8.4-2+deb12u2
2:1.8.7-1
redhat/libX11<1.8.7
1.8.7
ubuntu/libx11<2:1.6.4-3ubuntu0.4+
2:1.6.4-3ubuntu0.4+
ubuntu/libx11<2:1.6.9-2ubuntu1.6
2:1.6.9-2ubuntu1.6
ubuntu/libx11<2:1.7.5-1ubuntu0.3
2:1.7.5-1ubuntu0.3
ubuntu/libx11<2:1.8.4-2ubuntu0.3
2:1.8.4-2ubuntu0.3
ubuntu/libx11<2:1.8.6-1ubuntu1
2:1.8.6-1ubuntu1
ubuntu/libx11<2:1.8.6-1ubuntu1
2:1.8.6-1ubuntu1
ubuntu/libx11<2:1.6.2-1ubuntu2.1+
2:1.6.2-1ubuntu2.1+
ubuntu/libx11<1.8.7
1.8.7
ubuntu/libx11<2:1.6.3-1ubuntu2.2+
2:1.6.3-1ubuntu2.2+
ubuntu/libxpm<1:3.5.12-1ubuntu0.18.04.2+
1:3.5.12-1ubuntu0.18.04.2+
ubuntu/libxpm<1:3.5.12-1ubuntu0.20.04.2
1:3.5.12-1ubuntu0.20.04.2
ubuntu/libxpm<1:3.5.12-1ubuntu0.22.04.2
1:3.5.12-1ubuntu0.22.04.2
ubuntu/libxpm<1:3.5.12-1.1ubuntu0.1
1:3.5.12-1.1ubuntu0.1
ubuntu/libxpm<1:3.5.12-1.1ubuntu1
1:3.5.12-1.1ubuntu1
ubuntu/libxpm<1:3.5.12-1.1ubuntu1
1:3.5.12-1.1ubuntu1
ubuntu/libxpm<1:3.5.10-1ubuntu0.1+
1:3.5.10-1ubuntu0.1+
ubuntu/libxpm<3.5.17
3.5.17
ubuntu/libxpm<1:3.5.11-1ubuntu0.16.04.1+
1:3.5.11-1ubuntu0.16.04.1+

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-43787?

    CVE-2023-43787 is a vulnerability in the libX11 library that allows an attacker to trigger a heap overflow through an integer overflow in the XCreateImage() function.

  • How severe is CVE-2023-43787?

    CVE-2023-43787 has a severity rating of high.

  • Which software versions are affected by CVE-2023-43787?

    Versions 1.8.7 of libX11 (Ubuntu) and versions up to 1.8.7 (Ubuntu) are affected by CVE-2023-43787.

  • How do I fix CVE-2023-43787?

    To fix CVE-2023-43787, upgrade to version 1.8.7 (Ubuntu) or later, or apply the recommended patches for your specific Ubuntu or Debian distribution.

  • Where can I find more information about CVE-2023-43787?

    You can find more information about CVE-2023-43787 in the CVE entry at [https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43787](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43787) and the Ubuntu security notices at [https://ubuntu.com/security/notices/USN-6407-1](https://ubuntu.com/security/notices/USN-6407-1) and [https://ubuntu.com/security/notices/USN-6408-1](https://ubuntu.com/security/notices/USN-6408-1).

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