medium
6.5
CWE
20 415
Advisory Published
CVE Published
Updated

CVE-2023-29469: Input Validation

First published: Tue Apr 11 2023(Updated: )

An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

Credit: OSS-Fuzz Google Project Zero Google Project ZeroNed Williamson Google Project ZeroOSS-Fuzz Google Project Zero Google Project ZeroNed Williamson Google Project ZeroOSS-Fuzz Google Project ZeroNed Williamson Google Project ZeroOSS-Fuzz Google Project ZeroNed Williamson Google Project Zero cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Xmlsoft Libxml2<2.10.4
Debian Debian Linux=10.0
Apple iOS<16.5
16.5
Apple iPadOS<16.5
16.5
<13.4
13.4

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Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-29469.

  • What is the severity of CVE-2023-29469?

    The severity of CVE-2023-29469 is medium with a CVSS score of 6.5.

  • What is the affected software?

    The affected software is libxml2 versions up to and excluding 2.10.4.

  • How can I fix CVE-2023-29469?

    To fix CVE-2023-29469, you should update to libxml2 version 2.10.4 or above.

  • Where can I find more information about CVE-2023-29469?

    You can find more information about CVE-2023-29469 in the following references: [Link 1](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4), [Link 2](https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64), [Link 3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185985).

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