libTIFF: Multiple vulnerabilities

Background

libTIFF provides support for reading and manipulating TIFF images.

Description

Multiple vulnerabilities, ranging from integer overflows and NULL pointer dereferences to double frees, were reported in libTIFF.

Impact

An attacker could exploit these vulnerabilities by enticing a user to open a specially crafted TIFF image, possibly leading to the execution of arbitrary code or a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All libTIFF users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-libs/tiff-3.8.1"