Critical severity · published Feb 16, 2022
CVE-2022-25235
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context
9.8
CVSS
5%
EPSS
No
On KEV
Description
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.0% · higher than 92% 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; 11.0 · source: NVD
FE
Fedora · Fedoraproject
34; 35 · source: NVD
HS
Http Server · Oracle
12.2.1.3.0; 12.2.1.4.0 · source: NVD
LI
Libexpat · Libexpat Project
before 2.4.5 · source: NVD
SR
Sinema Remote Connect Server · Siemens
before 3.1 · source: NVD
ZS
Zfs Storage Appliance Kit · Oracle
8.8 · 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-2022-25235
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-25235
Mailing List
http://www.openwall.com/lists/oss-security/2022/02/19/1
Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
Patch
https://github.com/libexpat/libexpat/pull/562
Mailing List
https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
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