AV:N/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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Cisco Unified Presence contains three denial of service (DoS) vulnerabilities that may cause an interruption in presence services. These vulnerabilities were discovered internally by Cisco, and there are no workarounds.
Cisco has released software updates that address these vulnerabilities.
This advisory is posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20080514-cup.
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Vulnerable Products
Cisco Unified Presence versions prior to 6.0(3) are affected by the vulnerabilities described in this advisory.
Administrators of systems running all Cisco Unified Presence versions can determine the software version by viewing the main page of the Cisco Unified Presence Administration interface. The software version can be determined by running the command show version active via the Command Line Interface (CLI).
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Cisco Unified Presence collects information about a user's availability status and communications capabilities. Using information captured by Cisco Unified Presence, applications such as Cisco Unified Personal Communicator and Cisco Unified Communications Manager can improve productivity by helping users connect with colleagues more efficiently by determining the most effective means for collaborative communication.
The Presence Engine service of Cisco Unified Presence version 1.0 contains two vulnerabilities that occur when a series of malformed IP packets are received by a vulnerable Cisco Unified Presence system and may result in a DoS condition. There are no workarounds for these vulnerabilities. These vulnerabilities are fixed in Cisco Unified Presence version 6.0(1). Cisco Unified Presence version 6.0(1) is the upgrade path for Cisco Unified Presence version 1.0. The first vulnerability is documented in CVE-2008-1158 and Cisco Bug ID CSCsh50164. The second vulnerability is documented in CVE-2008-1740 and Cisco Bug ID CSCsh20972 ( registered customers only) .
The SIP Proxy service of Cisco Unified Presence versions 6.0(1) and 6.0(2) contain a vulnerability that occurs when a TCP port scan is received by a vulnerable Cisco Unified Presence system and may result in a DoS condition. There is no workaround for this vulnerability. This vulnerability is fixed in Cisco Unified Presence version 6.0(3). This vulnerability is documented in CVE-2008-1741 and Cisco Bug ID CSCsj64533 ( registered customers only) .
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There are no workarounds for these vulnerabilities.
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When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.
Fixes for all the vulnerabilities listed in this advisory are included in Cisco Unified Presence version 6.0(3) that is available at the following link:
http://www.cisco.com/pcgi-bin/tablebuild.pl/cup-60?psrtdcat20e2 ( registered customers only) .
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The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.
These vulnerabilities were internally discovered by Cisco.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Revision 1.0
2008-May-14
Initial public release
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