High severity · published Jan 8, 2022
CVE-2022-22827
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow
8.8
CVSS
3%
EPSS
No
On KEV
Description
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.0% · higher than 87% 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
LI
Libexpat · Libexpat Project
before 2.4.3 · source: NVD
NE
Nessus · Tenable
before 8.15.3; 10.0.0 before 10.1.1 · source: NVD
SR
Sinema Remote Connect Server · Siemens
before 3.1 · 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-2022-22827
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-22827
Mailing List
http://www.openwall.com/lists/oss-security/2022/01/17/3
Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
Third Party Advisory
https://github.com/libexpat/libexpat/pull/539
Third Party Advisory
https://security.gentoo.org/glsa/202209-24
Third Party Advisory
https://www.debian.org/security/2022/dsa-5073
Third Party Advisory
https://www.tenable.com/security/tns-2022-05
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