CVE-2023-28484: Null Pointer Dereference
First published: Tue Apr 11 2023(Updated: )
In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xmlsoft Libxml2 | <2.10.4 | |
| Debian Debian Linux | =10.0 |
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Reference Links
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/491
- https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
- https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html
- https://security.netapp.com/advisory/ntap-20230601-0006/
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185996
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185995
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185997
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185998
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2185999
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2186000
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2186002
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2186001
- https://access.redhat.com/errata/RHSA-2023:4349
- https://access.redhat.com/errata/RHSA-2023:4529
- https://access.redhat.com/errata/RHSA-2023:4628
- https://access.redhat.com/errata/RHSA-2024:0413
- https://bugzilla.redhat.com/show_bug.cgi?id=2185994
- https://security.netapp.com/advisory/ntap-20240201-0005/
Frequently Asked Questions
What is CVE-2023-28484?
CVE-2023-28484 is a vulnerability in libxml2 that can lead to a NULL pointer dereference and subsequently a segfault when parsing certain invalid XSD schemas.
How does CVE-2023-28484 affect libxml2?
CVE-2023-28484 affects libxml2 versions before 2.10.4.
What is the severity of CVE-2023-28484?
CVE-2023-28484 has a severity value of 6.5.
How can I fix CVE-2023-28484?
To fix CVE-2023-28484, update libxml2 to version 2.10.4 or later.
Where can I find more information about CVE-2023-28484?
You can find more information about CVE-2023-28484 at the following references: [link1], [link2], [link3].
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