Bug 443810 (CVE-2008-1887) - CVE-2008-1887 python: PyString_FromStringAndSize does not check for negative size values
Summary: CVE-2008-1887 python: PyString_FromStringAndSize does not check for negative ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-1887
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: http://nvd.nist.gov/nvd.cfm?cvename=C...
Whiteboard:
Depends On: 486106 486114 486329 486330 486351 486352 537915
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-04-23 14:09 UTC by Tomas Hoger
Modified: 2021-10-19 09:06 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-10-19 09:06:11 UTC
Embargoed:

Attachments (Terms of Use)


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
Red Hat Product Errata RHSA-2009:1178 0 normal SHIPPED_LIVE Moderate: python security update 2009-07-27 09:36:40 UTC

Description Tomas Hoger 2008-04-23 14:09:58 UTC 
Common Vulnerabilities and Exposures assigned an identifier CVE-2008-1887 to the following vulnerability:

Python 2.5.2 and earlier allows context-dependent attackers to execute arbitrary code via multiple vectors that cause a negative size value to provided to the PyString_FromStringAndSize function, which allocates less memory than expected when assert() is disabled and triggers a buffer overflow.

Refences:
http://bugs.python.org/issue2587
http://www.securityfocus.com/archive/1/490776
http://www.debian.org/security/2008/dsa-1551
Comment 1 Tomas Hoger 2008-04-23 14:58:19 UTC 
Upstream SVN commits:

http://svn.python.org/view?rev=62262&view=rev
http://svn.python.org/view?rev=62261&view=rev
Comment 2 Tomas Hoger 2008-04-23 15:16:06 UTC 
This really is a cause of CVE-2008-1721 tracked via bug bug #442005.  Upstream
bug reports suggest that this may cause problems in other modules as well (PySSL
also mentioned).

This underlying issue seems to exist in all Python versions we ship in Red Hat
Enterprise Linux 2.1, 3, 4, and 5 and Fedora.  On Fedora 7 and later,
interpreter is aborted when assertion on size being >= 0 is hit.
Comment 18 errata-xmlrpc 2009-07-27 09:22:53 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 19 errata-xmlrpc 2009-07-27 09:35:23 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
Comment 20 errata-xmlrpc 2009-07-27 09:37:18 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 3

Via RHSA-2009:1178 https://rhn.redhat.com/errata/RHSA-2009-1178.html
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