Bug 802591 (CVE-2012-1171) - CVE-2012-1171 php: libxml RSHUTDOWN function disables the hooks which are used to implement open_basedir
Summary: CVE-2012-1171 php: libxml RSHUTDOWN function disables the hooks which are use...
Keywords:
Status: CLOSED DUPLICATE of bug 169857
Alias: CVE-2012-1171
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:
Blocks: 802592
TreeView+ depends on / blocked
 
Reported: 2012-03-13 02:35 UTC by Kurt Seifried
Modified: 2021-02-24 12:55 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-04-18 04:11:53 UTC
Embargoed:

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Description Kurt Seifried 2012-03-13 02:35:41 UTC 
From PHP bug 61367:

The libxml RSHUTDOWN function disables the hooks which are used to implement open_basedir. It is possible to run user code after RSHUTDOWN, for example using the stream_close() method of a custom stream wrapper. Such code is able to read arbitrary files via libxml.

The suggested fix is to move the code which disables the hooks to a post-deactivate function. All op arrays are destroyed before post-deactivate, so it is not possible for user code to be executed after post-deactivate.
Comment 4 Huzaifa S. Sidhpurwala 2012-04-18 04:11:53 UTC 

*** This bug has been marked as a duplicate of bug 169857 ***
Comment 5 Huzaifa S. Sidhpurwala 2012-04-18 04:12:46 UTC 
Statement:

We do not consider safe_mode / open_basedir restriction bypass issues to be security sensitive.  For more details see http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1 and http://www.php.net/security-note.php
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