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CVE-2008-6564

7.6 · HIGH

Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force att…

Published Mar 31, 2009nortelEPSS 2.24%

Overview

CVE-2008-6564 is a high-severity vulnerability affecting nortel communication_server_1000. It was published on March 31, 2009 and has a CVSS 2.0 base score of 7.6 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.

Remediation

Check the references section for vendor advisories and patches from nortel. Update communication_server_1000 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refosvdb.org/44379Refsecunia.com/advisories/29747Refsupport.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455Refwww.securityfocus.com/bid/28691Refwww.securitytracker.com/id?1019847Refwww.voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESCRefexchange.xforce.ibmcloud.com/vulnerabilities/41801Refosvdb.org/44379Refsecunia.com/advisories/29747Refsupport.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455

How CyberStrike helps

Frequently asked questions

What is CVE-2008-6564?

CVE-2008-6564 is a high-severity vulnerability affecting nortel communication_server_1000. It was published on March 31, 2009 and has a CVSS 2.0 base score of 7.6 (HIGH).

How severe is CVE-2008-6564?

This vulnerability has a CVSS 2.0 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2008-6564?

Check the references section for vendor advisories and patches from nortel. Update communication_server_1000 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2008-6564?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2008-6564 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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