Bug 442005 (CVE-2008-1721) - CVE-2008-1721 python: integer signedness error in the zlib extension module
Summary: CVE-2008-1721 python: integer signedness error in the zlib extension module
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-1721
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: http://nvd.nist.gov/nvd.cfm?cvename=C...
Whiteboard:
Depends On: 486329 486330 486351 486352 537915
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-04-11 07:12 UTC by Tomas Hoger
Modified: 2021-11-12 19:49 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-10-19 09:06:06 UTC


Attachments (Terms of Use)
Copy of the reproducer from the upstream bug (693 bytes, text/plain)
2008-04-23 15:05 UTC, Tomas Hoger
no flags Details
Copy of the reproducer from the upstream bug (1.36 KB, text/plain)
2008-04-23 15:06 UTC, Tomas Hoger
no flags Details


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:1176 0 normal SHIPPED_LIVE Moderate: python security update 2009-07-27 09:22:50 UTC
Red Hat Product Errata RHSA-2009:1177 0 normal SHIPPED_LIVE Moderate: python security update 2009-07-27 09:35:19 UTC

Description Tomas Hoger 2008-04-11 07:12:11 UTC
Common Vulnerabilities and Exposures assigned an identifier CVE-2008-1721 to the following vulnerability:

Integer signedness error in the zlib extension module in Python 2.5.2
and earlier allows remote attackers to execute arbitrary code via a
negative signed integer, which triggers insufficient memory allocation
and a buffer overflow.

References:
http://www.securityfocus.com/archive/1/archive/1/490690/100/0/threaded
http://bugs.python.org/issue2586
http://www.securityfocus.com/bid/28715

Comment 1 Josh Bressers 2008-04-15 19:53:39 UTC
Since this issue requires a rather silly use of the python zlib module, we have
classified it as having a low security impact.

A future update may address this flaw. More information regarding issue severity
can be found here: http://www.redhat.com/security/updates/classification/

Comment 2 Tomas Hoger 2008-04-23 15:00:40 UTC
Fix as applied in zlib module: http://svn.python.org/view?rev=62235&view=rev

Comment 3 Tomas Hoger 2008-04-23 15:05:13 UTC
Created attachment 303501 [details]
Copy of the reproducer from the upstream bug

python-2.5.2-zlib-unflush-misallocation.py

Comment 4 Tomas Hoger 2008-04-23 15:06:21 UTC
Created attachment 303502 [details]
Copy of the reproducer from the upstream bug

python-2.5.2-zlib-unflush-signedness.py

Comment 5 Jan Lieskovsky 2008-10-30 14:46:53 UTC
The Red Hat Security Response Team has rated this issue as having low security
impact, a future update may address this flaw.  More information regarding
issue severity can be found here:
http://www.redhat.com/security/updates/classification/

Comment 9 errata-xmlrpc 2009-07-27 09:22:58 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2009:1176 https://rhn.redhat.com/errata/RHSA-2009-1176.html

Comment 10 errata-xmlrpc 2009-07-27 09:35:28 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4

Via RHSA-2009:1177 https://rhn.redhat.com/errata/RHSA-2009-1177.html


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