Medium severity · published Feb 18, 2022
CVE-2022-25313
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element
6.5
CVSS
3.3%
EPSS
No
On KEV
Description
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
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)3.3% · higher than 88% 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-2022-25313
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-25313
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
Third Party Advisory
https://github.com/libexpat/libexpat/pull/558
Third Party Advisory
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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