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>> 3Com IntelliJack Switch NJ220 Loopback Packet Handling Denial of Service Issue

Title : 3Com IntelliJack Switch NJ220 Loopback Packet Handling Denial of Service Issue
VUPEN ID : VUPEN/ADV-2007-2386
CVE ID : CVE-2007-3533
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-06-29


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in 3Com IntelliJack Switch NJ220 (3CNJ220), which could be exploited by attackers to cause a denial of service. This issue is caused by an error when processing a loopback packet with a length field of zero, which could be exploited by attackers to cause a vulnerable device to restart or stop sending event packets to the Central Configuration Manager utility, creating a denial of service condition.

Affected Products

3Com IntelliJack Switch NJ220 (3CNJ220) versions prior to 2.0.23

Solution

Upgrade to version 2.0.23 :
http://www.3com.com/products/en_US/result.jsp?selected=6&sort=effdt&order=desc&sku=WEBBNCNJ220SYS

References

http://www.vupen.com/english/advisories/2007/2386
http://support.3com.com/infodeli/tools/nj/nj220_02_00_23_readme.pdf

Credits

Vulnerability reported by the vendor.

ChangeLog

2007-06-29 : Initial release

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