Medium severity · published Apr 24, 2023
CVE-2023-28484
In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault
6.5
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
LI
Libxml2 · Xmlsoft
before 2.10.4 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28484
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28484
Exploit
https://gitlab.gnome.org/GNOME/libxml2/-/issues/491
Release Notes
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
Mailing List
https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html
security.netapp.com
https://security.netapp.com/advisory/ntap-20230601-0006/
security.netapp.com
https://security.netapp.com/advisory/ntap-20240201-0005/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-341067.html
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