Bug 1786567 (CVE-2019-11046) - CVE-2019-11046 php: OOB read in bc_shift_addsub
Summary: CVE-2019-11046 php: OOB read in bc_shift_addsub
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-11046
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1786568
Blocks: 1786580
TreeView+ depends on / blocked
 
Reported: 2019-12-26 09:39 UTC by Dhananjay Arunesh
Modified: 2020-01-06 13:47 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2020-01-06 13:47:59 UTC


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Description Dhananjay Arunesh 2019-12-26 09:39:28 UTC
A vulnerability was found in PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.

Reference:
https://bugs.php.net/bug.php?id=78878

Comment 1 Dhananjay Arunesh 2019-12-26 09:42:42 UTC
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1786568]

Comment 3 Marco Benatto 2020-01-06 13:47:17 UTC
Statement:

Any version of PHP as shipped with Red Hat Enterprise Linux are not affected. This flaw affected php running only on top of Windows Operating System, the bug itself is related to OS specific isdigit() function implementation.


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