[SECURITY] [DLA 323-1] fuseiso security update

2015-10-01T09:48:33
ID DEBIAN:DLA-323-1:33E62
Type debian
Reporter Debian
Modified 2015-10-01T09:48:33

Description

Package : fuseiso Version : 20070708-2+deb6u1 Debian Bug : #779047

The following two issues have recently been fixed in Debian LTS (squeeze) for the fuseiso package.

Issue 1

An integer overflow, leading to a heap-based buffer overflow flaw was
found in the way FuseISO, a FUSE module to mount ISO filesystem
images, performed reading of certain ZF blocks of particular inodes.
A remote attacker could provide a specially-crafted ISO file that,
when mounted via the fuseiso tool would lead to fuseiso binary crash.

This issue was discovered by Florian Weimer of Red Hat Product
Security Team.

The issue got resolve by bailing out before ZF blocks that exceed the
supported block size of 2^17 are to be read.

Issue 2

A stack-based buffer overflow flaw was found in the way FuseISO, a
FUSE module to mount ISO filesystem images, performed expanding of
directory portions for absolute path filename entries. A remote
attacker could provide a specially-crafted ISO file that, when
mounted via fuseiso tool would lead to fuseiso binary crash or,
potentially, arbitrary code execution with the privileges of the user
running the fuseiso executable.

This issue was discovered by Florian Weimer of Red Hat Product
Security Team.

The issue got resolved by checking the resulting length of an
absolute path name and by bailing out if the platform's PATH_MAX
value gets exceeded.

--

mike gabriel aka sunweaver (Debian Developer) fon: +49 (1520) 1976 148

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: sunweaver@debian.org, http://sunweavers.net

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