CVE-2017-9233
HIGH severity · CVSS 7.5 · XML external entity (XXE)
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)9%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://libexpat.github.io/doc/cve-2017-9233/Advisory
- http://www.debian.org/security/2017/dsa-3898Advisory
- http://www.openwall.com/lists/oss-security/2017/06/17/7
- http://www.securityfocus.com/bid/99276Advisory
- http://www.securitytracker.com/id/1039427Advisory
- https://github.com/libexpat/libexpat/blob/master/expat/ChangesAdvisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E