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Vigil@nce: libwmf, memory corruption
May 2009 by Vigil@nce
An attacker can invite the victim to open a malicious WMF image with an application linked to libwmf in order to create a denial of service or to execute code on his computer.
Severity: 2/4
Consequences: user access/rights, denial of service of client
Provenance: document
Means of attack: no proof of concept, no attack
Ability of attacker: expert (4/4)
Confidence: confirmed by the editor (5/5)
Diffusion of the vulnerable configuration: high (3/3)
Creation date: 06/05/2009
IMPACTED PRODUCTS
Debian Linux
Mandriva Corporate
Mandriva Linux
Red Hat Enterprise Linux
Unix - plateform
DESCRIPTION OF THE VULNERABILITY
The libwmf library handles WMF (Microsoft Windows Metafile Format) images.
This library contains its own version of the gd library. However, the gdClipSetAdd() function of the src/extra/gd/gd_clip.c file reallocates a pointer which can be uninitialized. A memory corruption thus occurs.
An attacker can therefore invite the victim to open a malicious WMF image with an application linked to libwmf in order to create a denial of service or to execute code on his computer.
CHARACTERISTICS
Identifiers: 496864, BID-34792, CVE-2009-1364, DSA 1796-1,
MDVSA-2009:106, RHSA-2009:0457-01, VIGILANCE-VUL-8692
Url: http://vigilance.fr/vulnerability/libwmf-memory-corruption-8692
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