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Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability
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Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability
Advisory ID: cisco-sa-20140924-sip
For Public Release 2014 September 24 16:00 UTC (GMT)
A vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device. To exploit this vulnerability, affected devices must be configured to process SIP messages.
Cisco has released free software updates that address this vulnerability.
There are no workarounds for devices that must run SIP; however, mitigations are available to limit exposure to this vulnerability.
This advisory is available at the following link:
Note: The September 24, 2014, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Individual publication links are in Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication at the following link:
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