ircu join apass denial of service

ircu-joinapass-dos (35987)

Medium Risk

Description:

ircu is vulnerable to a denial of service, caused by an error related to the oplevels service. By sending a specially-crafted join command with apass, a remote attacker could exploit this vulnerability to cause the server to crash.

*CVSS:

Base Score:	3.5
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	2.6
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

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-2007-4404: ircu 2.10.12.01 allows remote attackers to (1) cause a denial of service (flood wallops) by joining two channels with certain long names that differ in the final character, which triggers a protocol violation and (2) cause a denial of service (daemon crash) via a J 0:#channel message on a channel without an apass; and (3) allows remote authenticated operators to cause a denial of service (daemon crash) via a remote names -D command.

Platforms Affected:

• Carlo Wood ircu 2.10.12.02 - .04

Reported:

Aug 12, 2007

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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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