May 2005

ID: 00398
Ref: 368/2005
Date: 11 May 2005:15:09:47
Version: 1

---

Title: Two Gentoo Linux Security Advisories: 1. GLSA 200505-07 - libTIFF: Buffer overflow 2. GLSA 200505-08 - HT Editor: Multiple buffer overflows
Abstract:
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo

---

Title
=====

Two Gentoo Linux Security Advisories:

1. GLSA 200505-07 - libTIFF: Buffer overflow

2. GLSA 200505-08 - HT Editor: Multiple buffer overflows

Detail
======

1. Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a
stack based buffer overflow in the libTIFF library when reading a TIFF
image with a malformed BitsPerSample tag.

2. Tavis Ormandy of the Gentoo Linux Security Team discovered an integer
overflow in the ELF parser, leading to a heap-based buffer overflow.
The vendor has reported that an unrelated buffer overflow has been
discovered in the PE parser.



1.



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Gentoo Linux Security Advisory GLSA 200505-07
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http://security.gentoo.org/
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Severity: Normal
Title: libTIFF: Buffer overflow
Date: May 10, 2005
Bugs: #91584
ID: 200505-07

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Synopsis
========

The libTIFF library is vulnerable to a buffer overflow, potentially
resulting in the execution of arbitrary code.

Background
==========

libTIFF provides support for reading and manipulating TIFF (Tag Image
File Format) images.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/tiff < 3.7.2 >= 3.7.2

Description
===========

Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a
stack based buffer overflow in the libTIFF library when reading a TIFF
image with a malformed BitsPerSample tag.

Impact
======

Successful exploitation would require the victim to open a specially
crafted TIFF image, resulting in the execution of arbitrary code.

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-3.7.2"

References
==========

[ 1 ] LIBTIFF BUG#863
http://bugzilla.remotesensing.org/show_bug.cgi?id=843

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200505-07.xml

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
http://bugs.gentoo.org.

License
=======

Copyright 2005 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.

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



2.


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Gentoo Linux Security Advisory GLSA 200505-08
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http://security.gentoo.org/
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Severity: Normal
Title: HT Editor: Multiple buffer overflows
Date: May 10, 2005
Bugs: #91569
ID: 200505-08

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Synopsis
========

Two vulnerabilities have been discovered in HT Editor, potentially
leading to the execution of arbitrary code.

Background
==========

HT is a hex editor, designed to help analyse and modify executable
files.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-editors/hteditor < 0.8.0-r2 >= 0.8.0-r2

Description
===========

Tavis Ormandy of the Gentoo Linux Security Team discovered an integer
overflow in the ELF parser, leading to a heap-based buffer overflow.
The vendor has reported that an unrelated buffer overflow has been
discovered in the PE parser.

Impact
======

Successful exploitation would require the victim to open a specially
crafted file using HT, potentially permitting an attacker to execute
arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All hteditor users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-editors/hteditor-0.8.0-r2"

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200505-08.xml

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
http://bugs.gentoo.org.

License
=======

Copyright 2005 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.

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