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CVE-2009-4016

Date: February 4, 2010

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.

Severity Score

Related Resources (12)

http://lists.ratbox.org/pipermail/ircd-ratbox/2010-January/000891.html
http://svn.ircd-hybrid.org:8000/viewcvs.cgi?rev=1044&view=rev
http://secunia.com/advisories/38381
http://www.securityfocus.com/bid/37978
http://secunia.com/advisories/38382
http://secunia.com/advisories/38383
http://www.debian.org/security/2010/dsa-1980
http://secunia.com/advisories/38210
http://security.debian.org/pool/updates/main/i/ircd-hybrid/ircd-hybrid_7.2.2.dfsg.2-4+lenny1.diff.gz
http://trac.oftc.net/projects/oftc-hybrid/browser/tags/oftc-hybrid-1.6.8/RELNOTES
https://nvd.nist.gov/vuln/detail/CVE-2009-4016
https://www.mend.io/vulnerability-database/CVE-2009-4016

Severity Score

Weakness Type (CWE)

Numeric Errors

CWE-189

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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