Bug 565997 (CVE-2010-3444)

Summary:	CVE-2010-3444 pyfribidi: buffer overflow when processing Arabic UTF-8 strings
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	roozbeh
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
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Last Closed:	2021-10-19 09:10:03 UTC	Type:	---
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	565998
Bug Blocks:

Description Vincent Danen 2010-02-16 21:15:47 UTC

It was reported [1] that pyfribidi contains a buffer overflow in the log2vis_utf8() function due to the assumption that the string returned by fribidi_unicode_to_utf8() will be the same length as the original UTF-8 string.  Due to changes in fribidi 0.19.1, for the Arabic language this is not the case as the joining added in fribidi causes some of the original 2-byte UTF-8 sequences to be come 3-bytes long.

The upstream report also includes a patch that is supposed to correct the issue by increasing the size of the buffer passed to fribidi_unicode_to_utf8().

Due to Fedora 11 and 12 containing fribidi 0.19.2, this would affect Fedora.

[1] http://sourceforge.net/tracker/?func=detail&aid=2676136&group_id=158366&atid=807545

Comment 2 Vincent Danen 2010-10-01 20:03:48 UTC

This has been assigned the name CVE-2010-3444.