[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Fri, 29 Jul 2016 16:43:37 -0400 (EDT)
From: cve-assign@...re.org
To: ago@...too.org
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: paps: heap overflow when processing crafted file
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
> The bug comes from the fuzzer, which did not pass an empty file.
> Later, I discovered that an empty file has the same behaviour of
> the crafted.
>
> In other words:
> - The same crash happen for the empty and crafted file.
> - The patch covers both cases (when the file is empty and when
> contains random data).
Right, the file does not need to be empty (file length of zero), but
inbuf->len needs to end up being zero, which means that the g_iconv
calls produce zero output bytes for every line of the input file.
After the buffer under-read, if there isn't a crash, the return value
of read_file can be the empty string, which wasn't intended to be a
possible return value. However, we haven't seen information indicating
that this causes a security problem in later code. This is a
command-line program, and the available information is that there is
sometimes a non-exploitable crash when operating on an invalid file.
For now, we are categorizing this as an inconvenience to the user, not
a vulnerability: there is no CVE ID.
- --
CVE Assignment Team
M/S M300, 202 Burlington Road, Bedford, MA 01730 USA
[ A PGP key is available for encrypted communications at
http://cve.mitre.org/cve/request_id.html ]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAEBCAAGBQJXm79CAAoJEHb/MwWLVhi2N+UP+wePxHygX5ysWdiPbuqKjS8h
whEFNT7IOmFKBcZOEF1DGZs8Avwet2qbeFOvEU3HymEQEzyepLCn4vP5iPQHzqiT
ZFHD/cH/mKdr4IBwvFY6ipItanLSPd7kwXriFxwGJwwOzTWqT/2JwOxt4zUDL1xK
lFjRI2tpqPMkDFRRwogaculT/vx3c72K5tj0CgJHyXAkz+xJL4ZfKVTVnEyybJsf
1ihnu2uXQUUy9cwMb15X/a/3Zp9SwaSPmOq7U12aZMxYE1HdirFYhbfIbhQvhpvi
DZyLvu/h6T0z465Yguq+ru7Q9eArWEu3JDjr4H2uIjWnOIlcc5tifidnz+nYWS3S
8yfZnvLUf3gziwKYBPJTz+SyyEK0fba3zq+aifNpjU82jHsFSQ5jG+099QDA+ABM
GEoM++3Avi6wCwPafSi/zJgh/HV0gxsQbqw4dJ2V3PdXcU9Gd5kqEiwEabXecX7q
hbNx+Xkagip07CBLpdEdYSkaw6jbqXWjjzeYcy66GxVv1bI93VLDLfmC7vsKUY17
stgbEQEt89J+bWcVC1HpBp1zWNT42bn06JhAeYU4iAhYcuvWitUCo6qJwunuqknr
17NZqaTaG0AsWXnQIGLHpCQNlAmfXKHBph097Lj/SUxE9NpxECTY3ewQT+JKdylG
Qk0Mx1+5uqMRiN8yKRhP
=979d
-----END PGP SIGNATURE-----
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
