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JUNOS 7.3R1.5 exposure to MD5 authentication mismatch



Article ID: JSA10352 SECURITY_ADVISORIES Last Updated: 09 May 2013Version: 2.0
Legacy Advisory Id:
Product Affected:
All Juniper Networks M/T/J-series routers.
JUNOS software release 7.3R1.5 has been found to be vulnerable to attacks using TCP-based protocol packets. Any mismatch in MD5 authentication for packets sent to either configured or unconfigured TCP-based protocol peers on a Juniper Networks router running JUNOS Release 7.3R1.5 can result in a memory leak, which over time can cause a router restart.

This issue is tracked internally as PR/61535 for JUNOS software.

Changes have been made in JUNOS 7.3R1.6 software to mitigate the potential vulnerability of receiving packets with mismatched MD5 authentication to either configured or unconfigured TCP-based protocol peers.

JUNOS Release 7.3R1.6 contains modified code that provides expanded TCP and MD5 authentication checks.

Severity Level:
Severity Assessment:
An attacker can severely disrupt normal operation of the routing platform by injecting mismatched MD5 authentication packets to either configured or unconfigured TCP-based protocol peers.
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