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Vigil@nce: Ruby, denial of service via REXML

August 2008 by Vigil@nce

An attacker can create a malicious XML file in order to generate a
denial of service on victim’s computer.

 Gravity: 2/4
 Consequences: denial of service of service
 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: 26/08/2008
 Identifier: VIGILANCE-VUL-8054

IMPACTED PRODUCTS

- Unix - plateform

DESCRIPTION

Ruby can import libraries such as REXML. This last is used to
generate and read XML files.

REXML library is vulnerable if it treats an XML file recursively.
If a malicious file is open, this can generate a denial of service.

An attacker can therefore send a malicious XML file to a victim,
in order to generate a denial of service on his computer.

CHARACTERISTICS

 Identifiers: CVE-2008-3790, VIGILANCE-VUL-8054
 Url: https://vigilance.aql.fr/tree/1/8054


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