High severity · published Nov 23, 2017
CVE-2017-16932
parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities
7.5
CVSS
6.5%
EPSS
No
On KEV
Description
parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.5% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libxml2 · Xmlsoft
through 2.9.4 · 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-2017-16932
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-16932
Release Notes
http://xmlsoft.org/news.html
blog.clamav.net
https://blog.clamav.net/2018/07/clamav-01001-has-been-released.html
Permissions Required
https://bugzilla.gnome.org/show_bug.cgi?id=759579
Patch
https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
gitlab.gnome.org
https://gitlab.gnome.org/GNOME/libxml2/-/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
lists.apache.org
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
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