Bug 1293579 (CVE-2015-8614)

Summary:	CVE-2015-8614 claws-mail: Stack overflow in conv_{jistoeuc,euctojis,sjistoeuc}
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:	claws-mail 3.13.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:46:42 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:	1293580, 1293581
Bug Blocks:

Description Adam Mariš 2015-12-22 09:23:29 UTC

Stack-based buffer overflow vulnerabilities were found in conv_jistoeuc, conv_euctojis, conv_sjistoeuc functions, caused by missing bound checking on the output buffer, which is created on the stack with alloca().

Upstream patch:

http://git.claws-mail.org/?p=claws.git;a=commit;h=d390fa07f5548f3173dd9cc13b233db5ce934c82

CVE assignment:

http://seclists.org/oss-sec/2015/q4/557

Comment 1 Adam Mariš 2015-12-22 09:24:11 UTC

Created claws-mail tracking bugs for this issue:

Affects: fedora-all [bug 1293580]
Affects: epel-all [bug 1293581]

Comment 2 Michael Schwendt 2015-12-22 11:10:28 UTC

> Upstream patch:

Dubious. The change to conv_jistoeuc() disables the loop, because (out-outbuf) will be zero and hence the while-condition will never be true.

Apart from that, the patch is part of 3.13.1 which is pending on its way into updates-testing already.

Comment 3 Michael Schwendt 2015-12-22 11:24:42 UTC

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3584

Comment 4 Michael Schwendt 2015-12-22 11:25:42 UTC

http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=e3ffcb455e0376053451ce968e6c71ef37708222

Comment 5 Fedora Update System 2015-12-31 00:56:23 UTC

claws-mail-3.13.1-4.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2016-01-03 21:19:12 UTC

claws-mail-3.13.1-4.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Product Security DevOps Team 2019-06-08 02:46:42 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.