Several vulnerabilities have been discovered in the libtiff package :

iDefense reported the possibility of remote exploitation of an integer overflow in libtiff that may allow for the execution of arbitrary code.

The overflow occurs in the parsing of TIFF files set with the STRIPOFFSETS flag.

iDefense also reported a heap-based buffer overflow vulnerability within the LibTIFF package could allow attackers to execute arbitrary code. (CVE-2004-1308)

The vulnerability specifically exists due to insufficient validation of user-supplied data when calculating the size of a directory entry.

The updated packages are patched to protect against these vulnerabilities.

Several vulnerabilities have been discovered in the libtiff package;
wxGTK2 uses a libtiff code tree, so it may have the same vulnerabilities :

iDefense reported the possibility of remote exploitation of an integer overflow in libtiff that may allow for the execution of arbitrary code.

The overflow occurs in the parsing of TIFF files set with the STRIPOFFSETS flag.

iDefense also reported a heap-based buffer overflow vulnerability within the LibTIFF package could allow attackers to execute arbitrary code. (CVE-2004-1308)

The vulnerability specifically exists due to insufficient validation of user-supplied data when calculating the size of a directory entry.

The updated packages are patched to protect against these vulnerabilities.

The remote host is missing Security Update 2005-005. This security update contains fixes for the following applications :

  - Apache
  - AppKit
  - AppleScript
  - Bluetooth
  - Directory Services
  - Finder
  - Foundation
  - HelpViewer
  - LDAP
  - libXpm
  - lukemftpd
  - NetInfo
  - ServerAdmin
  - sudo
  - Terminal
  - VPN

These programs have multiple vulnerabilities that could allow a remote attacker to execute arbitrary code.

'infamous41md' discovered a problem in libtiff, the Tag Image File Format library for processing TIFF graphics files. Upon reading a TIFF file it is possible to allocate a zero sized buffer and write to it which would lead to the execution of arbitrary code.

Updated kdegraphics packages that resolve multiple security issues in kfax are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team

The kdegraphics package contains graphics applications for the K Desktop Environment.

During a source code audit, Chris Evans discovered a number of integer overflow bugs that affect libtiff. The kfax application contains a copy of the libtiff code used for parsing TIFF files and is therefore affected by these bugs. An attacker who has the ability to trick a user into opening a malicious TIFF file could cause kfax to crash or possibly execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0886 and CVE-2004-0804 to these issues.

Additionally, a number of buffer overflow bugs that affect libtiff have been found. The kfax application contains a copy of the libtiff code used for parsing TIFF files and is therefore affected by these bugs. An attacker who has the ability to trick a user into opening a malicious TIFF file could cause kfax to crash or possibly execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0803 to this issue.

Users of kfax should upgrade to these updated packages, which contain backported patches and are not vulnerable to this issue.

Updated libtiff packages that fix various buffer and integer overflows are now available.

The libtiff package contains a library of functions for manipulating TIFF (Tagged Image File Format) image format files. TIFF is a widely used file format for bitmapped images.

During a source code audit, Chris Evans discovered a number of integer overflow bugs that affect libtiff. An attacker who has the ability to trick a user into opening a malicious TIFF file could cause the application linked to libtiff to crash or possibly execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-0886 and CVE-2004-0804 to these issues.

Additionally, a number of buffer overflow bugs that affect libtiff have been found. An attacker who has the ability to trick a user into opening a malicious TIFF file could cause the application linked to libtiff to crash or possibly execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0803 to this issue.

All users are advised to upgrade to these errata packages, which contain fixes for these issues.

ID	Name	Product	Family	Published	Updated	Severity
16114	Mandrake Linux Security Advisory : libtiff (MDKSA-2005:001)	Nessus	Mandriva Local Security Checks	1/7/2005	1/6/2021	critical
16115	Mandrake Linux Security Advisory : wxGTK2 (MDKSA-2005:002)	Nessus	Mandriva Local Security Checks	1/7/2005	1/6/2021	critical
18189	Mac OS X Multiple Vulnerabilities (Security Update 2005-005)	Nessus	MacOS X Local Security Checks	5/3/2005	7/14/2018	high
16048	Debian DSA-617-1 : tiff - insufficient input validation	Nessus	Debian Local Security Checks	12/27/2004	1/4/2021	critical
18017	RHEL 2.1 / 3 : kdegraphics (RHSA-2005:021)	Nessus	Red Hat Local Security Checks	4/12/2005	1/14/2021	critical
15629	RHEL 2.1 / 3 : libtiff (RHSA-2004:577)	Nessus	Red Hat Local Security Checks	11/4/2004	1/14/2021	high
21795	CentOS 3 : kdegraphics (CESA-2005:021)	Nessus	CentOS Local Security Checks	7/3/2006	1/4/2021	critical

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