7242 : Multiple IRC Client Non-registered User parse_client_queued Saturation DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
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Timeline

Disclosure Date
2004-06-18

Description

IRCD-Hybrid and ircd-ratbox contain a flaw that may allow a remote denial of service. The issue is due to no rate limit imposed in the "parse_client_queued" function when an unidentified client sends lines. By establishing an unregistered connection and sending multiple newlines, a remote attacker can exhaust large amounts of memory resources and will result in loss of availability for the platform.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Availability
Exploit: Exploit Public

Solution

Upgrade to ircd-ratbox versions 1.5.2 and 2.0rc7 or IRCD-Hybrid 7.0.2
or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

ircd-ratbox.org	ircd-ratbox	1.5.1
		2.0rc6

ircd-hybrid.org

ircd-hybrid

7.0.1

References

Vendor Specific Solution URL: http://www.ircd-hybrid.org/diff/unreg_limit.diff
Bugtraq ID: 10572
Secunia Advisory ID: 11910
ISS X-Force ID: 16457
CVE ID: 2004-0605 (see also: NVD)
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2004-06/0299.html
Vendor URL: http://www.ircd-ratbox.org/index2.shtml
Other Advisory URL: http://www.securiteam.com/unixfocus/5CP0Q0AD5W.html

Tools & Filters

	14253

Credit

Erik Sperling Johansen. -

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

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