Actu
Vigil@nce - libxml2: denial of service via a recursive entity
April 2017 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can submit a document including a circular entity
definition and to be parsed by libxml2, in order to trigger a
denial of service.
Impacted products: openSUSE Leap.
Severity: 2/4.
Creation date: 13/02/2017.
DESCRIPTION OF THE VULNERABILITY
The libxml2 product includes a validating XML parser.
A document may include an entity definition in the internal DTD
subset. However, when the entity definition is circular, the check
against a depth limit is wrongly done.
An attacker can therefore submit a document including a circular
entity definition and to be parsed by libxml2, in order to trigger
a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/libxml2-denial-of-service-via-a-recursive-entity-21817
