CVE-2009-4016

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.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 4.01% Top 15%
Vendor Advisory debian.org Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2009-4016?
CVE-2009-4016 has been scored as a medium severity vulnerability.
How to fix CVE-2009-4016?
To fix CVE-2009-4016, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-4016 being actively exploited in the wild?
It is possible that CVE-2009-4016 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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