ircu timestamp security bypass

ircu-timestamp-security-bypass (35994)

Low Risk

Description:

ircu could allow a remote attacker to bypass security restrictions. By causing a bounce during linking, an attacker could exploit this vulnerability to bypass timestamp restrictions and gain unauthorized access to the affected channel.

*CVSS:

Base Score:	5.6
Access Vector:	Remote
Access Complexity:	High
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	4.1
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of ircu (2.10.12.06 or later), available from the SourceForge.net Web site. See References.

References:

• Full-Disclosure Mailing List, Sun Aug 12 2007 - 10:05:16 CDT: Multiple vulnerabilities in ircu.
• SourceForge.net: Universal Ircd Development.
• wouter.coekaerts.be Web site: Multiple vulnerabilities in ircu.
• BID-25285: Universal Ircd Server Multiple Remote Vulnerabilities
• CVE-2007-4408: ircu 2.10.12.05 and earlier ignores timestamps in bounces, which allows remote attackers to take over a channel during a netjoin by causing a bounce while a server with an older version of the channel is linking.

Platforms Affected:

• Carlo Wood ircu 2.10.12.01 - .05

Reported:

Aug 12, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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