10 - USN-46-1

Executive Summary

Summary
Title	TIFF library vulnerability

Informations
Name	USN-46-1	First vendor Publication	2004-12-22
Vendor	Ubuntu	Last vendor Modification	2004-12-22
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 4.10 (Warty Warthog)

The following packages are affected:

libtiff4

The problem can be corrected by upgrading the affected package to version 3.6.1-1.1ubuntu1.1. In general, a standard system upgrade is sufficient to effect the necessary changes.

Details follow:

A buffer overflow was discovered in the TIFF library. A TIFF file includes a value indicating the number of "directory entry" header fields contained in the file. If this value is -1, an invalid memory allocation was performed. A malicious image could be constructed which, when decoded, would have resulted in execution of arbitrary code with the privileges of the process using the library.

Since this library is used in many applications like "ghostscript" and the "CUPS" printing system, this vulnerability may lead to remotely induced privilege escalation.