CVE-2017-9233

7.5 HIGH

Published: July 25, 2017 Modified: May 13, 2026

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.debian.org/security/2017/dsa-3898

Source: cve@mitre.org

Third Party Advisory

http://www.openwall.com/lists/oss-security/2017/06/17/7

Source: cve@mitre.org

Mailing List VDB Entry

http://www.securityfocus.com/bid/99276

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://www.securitytracker.com/id/1039427

Source: cve@mitre.org

Third Party Advisory VDB Entry

https://github.com/libexpat/libexpat/blob/master/expat/Changes

Source: cve@mitre.org

Release Notes Third Party Advisory

https://libexpat.github.io/doc/cve-2017-9233/

Source: cve@mitre.org

Exploit Technical Description Vendor Advisory

https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

Source: cve@mitre.org

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

Source: cve@mitre.org

https://support.apple.com/HT208112

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT208113

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT208115

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT208144

Source: cve@mitre.org

Third Party Advisory

https://support.f5.com/csp/article/K03244804

Source: cve@mitre.org

Third Party Advisory

http://www.debian.org/security/2017/dsa-3898