Bug 188871

Summary:	CVE-2006-1730 CSS Letter-Spacing Heap Overflow Vulnerability
Product:	Red Hat Enterprise Linux 4	Reporter:	Josh Bressers <bressers>
Component:	thunderbird	Assignee:	Christopher Aillon <caillon>
Status:	CLOSED ERRATA	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	4.0	CC:	security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	reported=20060412,source=mozilla,embargo=yes,impact=critical
Fixed In Version:	RHSA-2006-0330	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-04-25 13:40:32 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:

Description Josh Bressers 2006-04-13 04:09:14 UTC

CSS Letter-Spacing Heap Overflow Vulnerability


An  anonymous  researcher for TippingPoint and the Zero Day Initiative
discovered an integer overflow triggered by the CSS letter-spacing property.
This results in in under-allocating memory and ultimately a heap buffer
overflow which could be exploited to run code of the attacker's choice.

The overflow condition itself does not require JavaScript and thus could
affect Thunderbird via received mail, but without scripting to prepare
memory it may not be possible to exploit this condition in mail.

Workaround

Upgrade to the fixed version.

References

[1]ZDI-06-009
[2]https://bugzilla.mozilla.org/show_bug.cgi?id=325403

Comment 3 Josh Bressers 2006-04-21 15:22:57 UTC

Lifting embargo

Comment 4 Red Hat Bugzilla 2006-04-21 15:37:22 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0330.html

Comment 5 Red Hat Bugzilla 2006-04-25 13:40:33 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0330.html