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vulnerability CVE-2012-2113

libtiff: integer overflow of tiff2pdf

Synthesis of the vulnerability

An attacker can invite the victim to open a malicious TIFF image with tiff2pdf, in order to create a denial of service or to execute code.
Impacted products: Debian, Fedora, MBS, MES, Mandriva Linux, openSUSE, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Unix (platform).
Severity: 2/4.
Creation date: 20/06/2012.
Identifiers: BID-54076, CERTA-2012-AVI-343, CVE-2012-2113, DSA-2552-1, FEDORA-2012-10081, FEDORA-2012-10089, MDVSA-2012:101, MDVSA-2013:046, openSUSE-SU-2012:0829-1, RHSA-2012:1054-01, SUSE-SU-2012:0894-1, VIGILANCE-VUL-11725.

Description of the vulnerability

The tiff2pdf tool of the libtiff suite is used to convert a TIFF image to a PDF document.

The t2p_read_tiff_size() function of the tools/tiff2pdf.c file reads the size of the TIFF image. This function computes several multiplications and additions. However, these operations can overflow, and lead to the allocation of a short memory area.

An attacker can therefore invite the victim to open a malicious TIFF image with tiff2pdf, in order to create a denial of service or to execute code.
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