7242 : Multiple IRC Client Non-registered User parse_client_queued Saturation DoS
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Info

Last Modified
about 1 year ago

Percent Complete
100%

Disclosure
Jun 18, 2004

Discovery
Unknown

Dates

Exploit
Jun 20, 2004

Solution
Unknown

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
Disclosure: OSVDB Verified

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-hybrid.org
Watch-list
ircd-hybrid
Watch-list
 7.0.1
ircd-ratbox.org
Watch-list
ircd-ratbox
Watch-list
 1.5.1
ircd-ratbox
Watch-list
 2.0rc6

References

Tools & Filters
14253

Credit
  • Erik Sperling Johansen. -

CVSSv2 Score

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

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_1

Blogs

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