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CVE Vulnerabilities

CVE-2023-28484

NULL Pointer Dereference

Published: Apr 24, 2023 | Modified: May 30, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
5.9 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-28484
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Libxml2Xmlsoft*2.10.4 (excluding)
Red Hat Enterprise Linux 8RedHatlibxml2-0:2.9.7-16.el8_8.1*
Red Hat Enterprise Linux 8RedHatlibxml2-0:2.9.7-16.el8_8.1*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatlibxml2-0:2.9.7-13.el8_6.4*
Red Hat Enterprise Linux 9RedHatlibxml2-0:2.9.13-3.el9_2.1*
Red Hat Enterprise Linux 9RedHatlibxml2-0:2.9.13-3.el9_2.1*
Text-Only JBCSRedHatlibxml2*
Libxml2Ubuntubionic*
Libxml2Ubuntuesm-infra-legacy/trusty*
Libxml2Ubuntuesm-infra/bionic*
Libxml2Ubuntuesm-infra/focal*
Libxml2Ubuntuesm-infra/xenial*
Libxml2Ubuntufocal*
Libxml2Ubuntujammy*
Libxml2Ubuntukinetic*
Libxml2Ubuntulunar*
Libxml2Ubuntutrusty*
Libxml2Ubuntutrusty/esm*
Libxml2Ubuntuxenial*

Potential Mitigations

References

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