Bug 1295353 (CVE-2015-8708)

Summary:	CVE-2015-8708 claws-mail: Stack overflow in conv_euctojis()
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	andreas.bierfert, bugs.michael, kupo, ssorce
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:	2019-06-08 02:46:56 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:	1295355, 1295356
Bug Blocks:

Description Adam Mariš 2016-01-04 09:01:59 UTC

A stack-based buffer overflow has been found in conv_euctojis() after applying incomplete patch for CVE-2015-8614. In conv_euctojis() the comparison is with outlen - 3, but each pass through the loop uses up to 5 bytes and the rest of the function may add another 4 bytes. The comparison should presumably be '<= outlen - 9' or equivalently '< outlen - 8'.

CVE assignment:

http://www.openwall.com/lists/oss-security/2015/12/31/3

Comment 1 Adam Mariš 2016-01-04 09:02:34 UTC

Created claws-mail tracking bugs for this issue:

Affects: fedora-all [bug 1295355]
Affects: epel-all [bug 1295356]

Comment 2 Michael Schwendt 2016-01-04 21:51:50 UTC

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3557

Comment 3 Michael Schwendt 2016-01-13 15:44:03 UTC

There is a new [albeit unconfirmed] patch suggestion:
http://www.thewildbeast.co.uk/claws-mail/bugzilla/attachment.cgi?id=1623&action=edit

Comment 4 Fedora Update System 2016-02-08 03:23:05 UTC

claws-mail-3.13.2-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2016-02-10 10:50:56 UTC

claws-mail-3.13.2-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Product Security DevOps Team 2019-06-08 02:46:56 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.