Bug 1287666 (CVE-2015-8390) - CVE-2015-8390 pcre: uninitialized memory read triggered by malformed posix character class (8.38/22)
Summary: CVE-2015-8390 pcre: uninitialized memory read triggered by malformed posix ch...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-8390
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1287667 1287668 1287669 1287670
Blocks: 1287727
TreeView+ depends on / blocked
 
Reported: 2015-12-02 13:41 UTC by Adam Mariš
Modified: 2019-10-10 10:36 UTC (History)
17 users (show)

Fixed In Version: pcre 8.38
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-02-22 09:50:20 UTC


Attachments (Terms of Use)

Description Adam Mariš 2015-12-02 13:41:20 UTC
It was found that PCRE before 8.38 mishandles the [: and \\ substrings in character classes, which are incorrectly compiled and could cause reading from uninitialized memory or an incorrect error diagnosis, which allows remote attackers to cause a denial of service (uninitialized memory read) or possibly have unspecified other impact via a crafted regular expression.

Comment 1 Adam Mariš 2015-12-02 13:42:20 UTC
Created pcre tracking bugs for this issue:

Affects: fedora-all [bug 1287667]

Comment 2 Adam Mariš 2015-12-02 13:42:30 UTC
Created glib2 tracking bugs for this issue:

Affects: fedora-all [bug 1287669]

Comment 3 Adam Mariš 2015-12-02 13:42:37 UTC
Created mingw-pcre tracking bugs for this issue:

Affects: fedora-all [bug 1287668]
Affects: epel-7 [bug 1287670]

Comment 4 Adam Mariš 2015-12-02 15:24:11 UTC
Corresponds to item 22 in http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup

Comment 5 Petr Pisar 2015-12-02 16:05:00 UTC
Fixed in upstream with:

commit 084a8fe109a94f6d146c6a7a0e397cc3d40c6b67
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
Date:   Mon Jul 20 16:27:31 2015 +0000

    Fix bug for classes containing \\ sequences.
    
    
    git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1578 2f5784b3-3f2a-0410-8824-
cb99058d5e15

Comment 6 Fedora Update System 2016-01-04 19:54:42 UTC
pcre-8.38-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Tomas Hoger 2016-02-22 09:50:20 UTC
(In reply to Petr Pisar from comment #5)
> Fixed in upstream with:
> 
> commit 084a8fe109a94f6d146c6a7a0e397cc3d40c6b67
> Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
> Date:   Mon Jul 20 16:27:31 2015 +0000
> 
> Fix bug for classes containing \\ sequences.

Upstream commit link:

http://vcs.pcre.org/pcre?view=revision&revision=1578

This is a bug, but it does not seem to have any practical security impact.


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