zgv, xzgv: Heap overflow

zgv, xzgv: Heap overflow xzgv and zgv attempt to decode JPEG images within the CMYK/YCCK colour space incorrectly, potentially resulting in the execution of arbitrary code. xzgv 2006-04-21 2006-06-10: 02 127008 remote 0.8-r2 0.8-r2 5.9 5.9

xzgv and zgv are picture viewing utilities with a thumbnail based file selector.

Andrea Barisani of Gentoo Linux discovered xzgv and zgv allocate insufficient memory when rendering images with more than 3 output components, such as images using the YCCK or CMYK colour space. When xzgv or zgv attempt to render the image, data from the image overruns a heap allocated buffer.

An attacker may be able to construct a malicious image that executes arbitrary code with the permissions of the xzgv or zgv user when attempting to render the image.

There is no known workaround at this time.

All xzgv users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/xzgv-0.8-r2"

All zgv users should also upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/zgv-5.9"

CVE-2006-1060 homepage plus Changelog jaervosz koon taviso