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Severity: 2/4

Consequences: data flow

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: 15/06/2009

IMPACTED PRODUCTS

 Norman Virus Control

DESCRIPTION OF THE VULNERABILITY

Norman products detect viruses contained in RAR archives.

However, an attacker can create a slightly malformed archive (Size and Method), which can still be opened by Unrar tools, but which cannot be opened by the antivirus.

An attacker can therefore create a RAR archive containing a virus which is not detected by Norman products.

CHARACTERISTICS

Identifiers: BID-35357, TZO-32-2009, VIGILANCE-VUL-8795 http://vigilance.fr/vulnerability/Norman-Antivirus-bypassing-via-RAR-8795