Critical severity · published Aug 30, 2024
CVE-2024-45491
An issue was discovered in libexpat before 2.6.3
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
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)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libexpat · Libexpat Project
before 2.6.3 · source: NVD
EX
Expat · Libexpat
before 2.6.3 · source: CISA
RR
RUGGEDCOM RST2428P · Siemens
before V3.1 · source: CISA
SX
SCALANCE XCM-/XRM-/XCH-/XRH-300 family · Siemens
before V3.1 · source: CISA
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.5; V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.5; V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-45491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-45491
Issue Tracking
https://github.com/libexpat/libexpat/issues/888
Patch
https://github.com/libexpat/libexpat/pull/891
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/09/msg00036.html
security.netapp.com
https://security.netapp.com/advisory/ntap-20241018-0003/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-613116.html
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