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Vulnerability Note VU#659140Ethereal ISUP protocol dissector fails to properly decode ISUP packetsOverviewEthereal fails to properly decode ISDN User Part (ISUP) packets containing an overly long Interworking Function Address (IWFA) value.I. DescriptionEthereal is a network traffic analysis package. It includes the ability to decode packets containing ISUP data. There is a vulnerability in the way the ISUP protocol dissector decodes the IWFA value. By sending an ISUP packet containing an overly long IWFA value, a remote, unauthenticated attacker could execute arbitrary code.II. ImpactA remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.III. SolutionUpgradeUpgrade to version 0.10.3 or later.
2) Deselect the ISUP protocol dissector from the list (for Ethereal versions 0.10.x)
2) Disable the ISUP protocol dissector from the list by unchecking its "Status" checkbox However, it is strongly encouraged to upgrade to version 0.10.3 or later. Systems Affected
References
Ethereal credits Stefan Esser for reporting this vulnerability. This document was written by Damon Morda.
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