Medium severity · published Aug 29, 2023
CVE-2023-39615
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c
6.5
CVSS
1.1%
EPSS
No
On KEV
Description
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
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)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libxml2 · Xmlsoft
2.11.0 · 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
SN
SINEC NMS · Siemens
before V3.0 · 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-2023-39615
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-39615
Exploit
https://gitlab.gnome.org/GNOME/libxml2/-/issues/535
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/02/msg00028.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-341067.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-556635.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-784301.html
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