=========================================================================Ubuntu Security Notice USN-3212-4
August 07, 2017
tiff vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary:
LibTIFF could be made to crash or run programs as your login if it
opened a specially crafted file.
Software Description:
- tiff: Tag Image File Format (TIFF) library
Details:
USN-3212-1 fixed several issues in LibTIFF. This update
provides a subset of corresponding update for Ubuntu 12.04 ESM.
Mei Wang discovered a multiple integer overflows in LibTIFF which
allows remote attackers to cause a denial of service (crash) or
execute arbitrary code via a crafted TIFF image, which triggers
an out-of-bounds write. (CVE-2016-3945)
It was discovered that LibTIFF is vulnerable to a heap buffer
overflow in the resulting in DoS or code execution
via a crafted BitsPerSample value. (CVE-2017-5225)
Original advisory details:
It was discovered that LibTIFF incorrectly handled certain malformed
images. If a user or automated system were tricked into opening a
specially crafted image, a remote attacker could crash the
application, leading to a denial of service, or possibly execute
arbitrary code with user privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
libtiff-tools 3.9.5-2ubuntu1.11
libtiff4 3.9.5-2ubuntu1.11
In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-3212-4
https://ubuntu.com/security/notices/USN-3212-1
CVE-2016-3945, CVE-2017-5225
