High severity · published Jul 25, 2017
CVE-2017-9233
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity…
7.5
CVSS
8.7%
EPSS
No
On KEV
Description
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
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)8.7% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
LI
Libexpat · Libexpat Project
through 2.2.0 · source: NVD
PY
Python · Python
2.7.0 before 2.7.15; 3.3.0 before 3.3.7; 3.4.0 before 3.4.7; 3.5.0 before 3.5.4; 3.6.0 before 3.6.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-9233
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-9233
Third Party Advisory
http://www.debian.org/security/2017/dsa-3898
Mailing List
http://www.openwall.com/lists/oss-security/2017/06/17/7
Third Party Advisory
http://www.securityfocus.com/bid/99276
Third Party Advisory
http://www.securitytracker.com/id/1039427
Release Notes
https://github.com/libexpat/libexpat/blob/master/expat/Changes
Exploit
https://libexpat.github.io/doc/cve-2017-9233/
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