Bug 816153 (CVE-2012-2135)

Summary:	CVE-2012-2135 python3: Data leaks, memory damage and possible crash in utf-16 decoder
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	amcnabb, bkabrda, dmalcolm, tomspur
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-07-23 06:28:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	816156
Bug Blocks:	816043

Description Jan Lieskovsky 2012-04-25 11:10:31 UTC

A security flaw was found in the way the UTF-16 decoder of Python, an interpreted, interactive, object-oriented programming language, handled error messages after processing of certain UTF-16 strings. If a Python UTF-16 module based application provided remote means to accept unsanitized input, a remote attacker could use this flaw to cause denial of service (python executable to leak data, cause memory damage and possibly crash).

Upstream ticket:
[1] http://bugs.python.org/issue14579

CVE assignment:
[2] http://www.openwall.com/lists/oss-security/2012/04/25/3

Preliminary patches against the v3.2 version:
[3] http://bugs.python.org/file25294/utf16_error_handling-3.2.patch
[4] http://bugs.python.org/file25295/utf16_update_after_error-3.2.patch
[5] http://bugs.python.org/file25352/utf16_error_handling-3.2_3.patch

Reproducer:
[6] http://bugs.python.org/file25276/utf16crasher.py

Comment 1 Jan Lieskovsky 2012-04-25 11:12:23 UTC

This issue affects the versions of the python3 package, as shipped with Fedora release of 15 and 16. Please schedule an update.

Comment 2 Jan Lieskovsky 2012-04-25 11:13:42 UTC

Created python3 tracking bugs for this issue

Affects: fedora-all [bug 816156]