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Gentoo Linux Security Advisory                           GLSA 200604-10
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: zgv, xzgv: Heap overflow
      Date: April 21, 2006
      Bugs: #127008
        ID: 200604-10

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Synopsis
=======
xzgv and zgv attempt to decode JPEG images within the CMYK/YCCK colour
space incorrectly, potentially resulting in the execution of arbitrary
code.

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

Affected packages
================
    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  media-gfx/xzgv      < 0.8-r2                            >= 0.8-r2
  2  media-gfx/zgv         < 5.8                                >= 5.8
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

Description
==========
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.

Impact
=====
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.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
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-5.8"

References
=========
  [ 1 ] CVE-2006-1060
        
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/200604-10

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org/.

License
======
Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.0/

Gentoo: GLSA-200604-10: 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

Summary

Gentoo Linux Security Advisory GLSA 200604-10 https://security.gentoo.org/ Severity: Normal Title: zgv, xzgv: Heap overflow Date: April 21, 2006 Bugs: #127008 ID: 200604-10

Synopsis ======= xzgv and zgv attempt to decode JPEG images within the CMYK/YCCK colour space incorrectly, potentially resulting in the execution of arbitrary code.
Background ========= xzgv and zgv are picture viewing utilities with a thumbnail based file selector.
Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-gfx/xzgv < 0.8-r2 >= 0.8-r2 2 media-gfx/zgv < 5.8 >= 5.8 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
========== 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.
Impact ===== 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.
Workaround ========= There is no known workaround at this time.
Resolution ========= 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-5.8"
References ========= [ 1 ] CVE-2006-1060
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/200604-10
Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org/.
License ====== Copyright 2006 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.0/

Resolution

References

Availability

Concerns

Severity

Synopsis

Background

Affected Packages

Impact

Workaround

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