Bug 1462729 (CVE-2017-9233) - CVE-2017-9233 expat: Inifinite loop due to invalid XML in external entity
Summary: CVE-2017-9233 expat: Inifinite loop due to invalid XML in external entity
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2017-9233
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1462731 1462732 1462733 1462734 1462735
Blocks: 1462763
TreeView+ depends on / blocked
 
Reported: 2017-06-19 12:37 UTC by Adam Mariš
Modified: 2021-02-25 23:26 UTC (History)
51 users (show)

Fixed In Version: expat 2.2.1
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Clone Of:
Environment:
Last Closed: 2019-06-08 03:15:06 UTC
Embargoed:

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Description Adam Mariš 2017-06-19 12:37:58 UTC 
An infinite loop vulnerability due to malformed XML in external entity was found in entityValueInitProcessor function affecting versions of Expat 2.2.0 and earlier.

Upstream patch:

https://github.com/libexpat/libexpat/commit/c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f

External References:

https://libexpat.github.io/doc/cve-2017-9233/
Comment 1 Adam Mariš 2017-06-19 12:39:36 UTC 
Created compat-expat1 tracking bugs for this issue:

Affects: fedora-all [bug 1462732]


Created expat tracking bugs for this issue:

Affects: fedora-all [bug 1462735]


Created expat21 tracking bugs for this issue:

Affects: epel-all [bug 1462734]


Created mingw-expat tracking bugs for this issue:

Affects: epel-7 [bug 1462731]
Affects: fedora-all [bug 1462733]
Comment 2 Huzaifa S. Sidhpurwala 2017-08-04 04:25:12 UTC 
Mitigation:

Do not parse untrusted arbitrary XML data using the expat package.
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