Bug 959993 – VUL-0: CVE-2015-8614: claws-mail: no bounds check could lead to stack overflow

Bug 959993 - (CVE-2015-8614) VUL-0: CVE-2015-8614: claws-mail: no bounds check could lead to stack overflow

(CVE-2015-8614)
Summary:	VUL-0: CVE-2015-8614: claws-mail: no bounds check could lead to stack overflow

Status:	RESOLVED FIXED

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other openSUSE 42.1

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/160026/
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Depends on:	CVE-2015-8708
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Reported:	2015-12-22 08:56 UTC by Victor Pereira
Modified:	2016-02-17 00:11 UTC (History)
CC List:	3 users (show)

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Found By:	Security Response Team
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Blocker:	---
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Description Victor Pereira 2015-12-22 08:56:02 UTC

CVE-2015-8614

So in codeconv.c there is a function for japanese character set conversion called conv_jistoeuc().  There is no bounds checking on the output buffer, which is created on the stack with alloca().  

References:
http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3557
http://seclists.org/oss-sec/2015/q4/557
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8614

Comment 1 Swamp Workflow Management 2015-12-22 23:00:17 UTC

bugbot adjusting priority

Comment 2 Atri Bhattacharya 2015-12-24 02:12:09 UTC

I am working on this, in case anyone hasn't already applied for the job ;)

Comment 3 Atri Bhattacharya 2015-12-24 03:32:53 UTC

https://build.opensuse.org/request/show/350619

Comment 4 Andreas Stieger 2015-12-24 11:20:19 UTC

(In reply to Atri Bhattacharya from comment #3)
> https://build.opensuse.org/request/show/350619

If 13.1 and 13.2 are affected, can you please submit for these as well?

Comment 5 Bernhard Wiedemann 2015-12-24 13:00:08 UTC

This is an autogenerated message for OBS integration:
This bug (959993) was mentioned in
https://build.opensuse.org/request/show/350674 42.1+13.1+13.2 / claws-mail

Comment 6 Atri Bhattacharya 2015-12-24 13:26:54 UTC

Thanks for pointing out, Andreas. Since upstream only committed it to the master branch I thought the bug only affected the latest version, but indeed 13.2 and 13.1 are affected too. Please see https://build.opensuse.org/request/show/350674 for the multi-target fix.

Comment 7 Andreas Stieger 2015-12-24 21:53:43 UTC

update is running

Comment 8 Andreas Stieger 2016-01-01 20:50:51 UTC

Releasing

Comment 9 Swamp Workflow Management 2016-01-02 00:04:35 UTC

openSUSE-SU-2016:0002-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 959993
CVE References: CVE-2015-8614
Sources used:
openSUSE Leap 42.1 (src):    claws-mail-3.12.0-4.1
openSUSE 13.2 (src):    claws-mail-3.11.0-2.7.1
openSUSE 13.1 (src):    claws-mail-3.10.1-3.8.1

Comment 10 Swamp Workflow Management 2016-02-16 20:13:24 UTC

openSUSE-SU-2016:0479-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 959993
CVE References: CVE-2015-8614
Sources used:
openSUSE Leap 42.1 (src):    claws-mail-3.12.0-7.1
openSUSE 13.2 (src):    claws-mail-3.11.0-2.10.1

Comment 11 Swamp Workflow Management 2016-02-17 00:11:54 UTC

openSUSE-SU-2016:0485-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 959993
CVE References: CVE-2015-8614
Sources used:
openSUSE 13.1 (src):    claws-mail-3.11.0-3.11.1