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Date: Thu, 18 Jun 2015 13:05:12 -0400 (EDT)
From: cve-assign@...re.org
To: gcanalesb@...com
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: Possible CVE Request: Multiple stack overflows in squashfs-tools and sasquatch

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>> As far as we can tell, there are two independent types of problems:

>> We would guess that the most likely case is that only 3 and 6 are
>> applicable, i.e., the code problems are found only in
>> unsquash-1.c/unsquash-2.c/unsquash-3.c/unsquash-4.c and all of these
>> files exist in both squashfs-tools and sasquatch. Is this correct?

> Yes, that is correct.

>>   - "int bytes" is incorrect because the return value of
>>     SQUASHFS_FRAGMENT_BYTES can be larger than the maximum
>>     value of a signed int

Use CVE-2015-4645.


>>   - pull/5 says "If we fix this by making the variable size_t, we run
>>     into an unrelated problem in which the stack VLA allocation of
>>     fragment_table_index[] can easily exceed RLIMIT_STACK" but
>>     actually RLIMIT_STACK can be exceeded regardless of the data type
>>     of the bytes variable

Use CVE-2015-4646.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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