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Bug 1293579 - (CVE-2015-8614) CVE-2015-8614 claws-mail: Stack overflow in conv_{jistoeuc,euctojis,sjistoeuc}
CVE-2015-8614 claws-mail: Stack overflow in conv_{jistoeuc,euctojis,sjistoeuc}
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20151104,repor...
: Security
Depends On: 1293581 1293580
Blocks:
  Show dependency treegraph
 
Reported: 2015-12-22 04:23 EST by Adam Mariš
Modified: 2016-01-03 16:19 EST (History)
4 users (show)

See Also:
Fixed In Version: claws-mail 3.13.1
Doc Type: Bug Fix
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Description Adam Mariš 2015-12-22 04:23:29 EST
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 04:24:11 EST
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 06:10:28 EST
> 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 5 Fedora Update System 2015-12-30 19:56:23 EST
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 16:19:12 EST
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.

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