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Centericq Empty Packet Handling Weakness and Buffer Overflows
Secunia Advisory: SA17798
Release Date: 2005-11-30
Last Update: 2007-07-13
Popularity: 6,904 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Unpatched

Software:Centericq 4.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
A weakness and some vulnerabilities have been reported in Centericq, which can be exploited by malicious people to cause a DoS (Denial of Service), and potentially to compromise a user's system.

1) The weakness is caused due to an error in the packet handling for peer to peer communications in the "DirectClient" class. This can be exploited to crash a vulnerable client by sending an empty packet to the listening port.

Successful exploitation requires that the setting "Enable peer-to-peer communications" has been enabled.

2) A boundary error exists in the ktools library used by Centericq. This can be exploited to caused a buffer overflow when the user edits specially crafted contact details retrieved from the messaging server.

For more information:
SA17768

3) Various boundary errors are reported in the IRC, Jabber, LiveJournal, and Yahoo hook, which potentially can be exploited to cause a buffer overflow and execute arbitrary code.

Successful exploitation may require that a user connects to malicious servers.

The weakness and vulnerabilities are reported in version 4.21.0. Other versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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