Bug 1351070 (CVE-2016-5769) - CVE-2016-5769 php: Integer Overflows in mcrypt_generic() and mdecrypt_generic() resulting in heap overflows
Summary: CVE-2016-5769 php: Integer Overflows in mcrypt_generic() and mdecrypt_generic...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-5769
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: 1351180
Blocks: 1351183
TreeView+ depends on / blocked
 
Reported: 2016-06-29 07:22 UTC by Andrej Nemec
Modified: 2021-02-17 03:39 UTC (History)
13 users (show)

Fixed In Version: php 5.5.37, php 5.6.23
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Clone Of:
Environment:
Last Closed: 2016-07-21 10:28:19 UTC
Embargoed:

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Description Andrej Nemec 2016-06-29 07:22:21 UTC 
The mcrypt_generic() and mdecrypt_generic() functions are prone to an integer overflow, which result in heap based overflow.

Upstream bug:

https://bugs.php.net/bug.php?id=72455

Upstream patch:

http://git.php.net/?p=php-src.git;a=commitdiff;h=6c5211a0cef0cc2854eaa387e0eb036e012904d0

CVE assignment:

http://seclists.org/oss-sec/2016/q2/589
Comment 1 Andrej Nemec 2016-06-29 12:04:57 UTC 
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1351180]
Comment 2 Fedora Update System 2016-07-02 15:27:30 UTC 
php-5.6.23-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2016-07-02 19:22:19 UTC 
php-5.6.23-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2016-07-02 19:27:37 UTC 
php-5.6.23-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Huzaifa S. Sidhpurwala 2016-07-11 10:21:52 UTC 
Analysis:

This is a integer overflow, leading to a heap based buffer overflow in the mcrypt_generic and mdecrypt_generic function. A typical attack scenario is a user supplied file, which is encrypted or decrypted by a php application.
Comment 7 Huzaifa S. Sidhpurwala 2016-07-21 10:28:19 UTC 
Statement:

The versions of PHP package shipped with Red Hat Enterprise Linux, do not have support for mcrypt.
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