Vulnerability CVE-2009-4016
Published: 2010-02-04   Modified: 2012-02-13

Description:
Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3) oftc-hybrid before 1.6.8, when flatten_links is disabled, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command.

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
OFTC -> Oftc-hybrid 
Ircd-ratbox -> Ircd-ratbox 
Ircd-hybrid -> Ircd-hybrid 

 References:
http://www.debian.org/security/2010/dsa-1980
http://security.debian.org/pool/updates/main/i/ircd-hybrid/ircd-hybrid_7.2.2.dfsg.2-4+lenny1.diff.gz
http://www.securityfocus.com/bid/37978
http://trac.oftc.net/projects/oftc-hybrid/browser/tags/oftc-hybrid-1.6.8/RELNOTES
http://svn.ircd-hybrid.org:8000/viewcvs.cgi?rev=1044&view=rev
http://secunia.com/advisories/38383
http://secunia.com/advisories/38382
http://secunia.com/advisories/38381
http://secunia.com/advisories/38210
http://lists.ratbox.org/pipermail/ircd-ratbox/2010-January/000891.html
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