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CVE-2023-29469

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Date: April 24, 2023

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).

Language: C

Severity Score

Related Resources (10)

https://gitlab.gnome.org/GNOME/libxml2/-/issues/510
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
https://security.netapp.com/advisory/ntap-20230601-0006/
https://github.com/GNOME/libxml2/commit/09a2dd453007f9c7205274623acdd73747c22d64
https://security-tracker.debian.org/tracker/CVE-2023-29469
https://bugzilla.redhat.com/show_bug.cgi?id=2185984
https://nvd.nist.gov/vuln/detail/CVE-2023-29469
https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html
https://access.redhat.com/security/cve/CVE-2023-29469
https://www.mend.io/vulnerability-database/CVE-2023-29469

Severity Score

Weakness Type (CWE)

Double Free

CWE-415

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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