CVE-2013-0238 Information

Description

The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267 http://osvdb.org/89623 http://secunia.com/advisories/51948 http://secunia.com/advisories/52106 http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786 http://www.debian.org/security/2013/dsa-2618 http://www.exploit-db.com/exploits/24951 http://www.mandriva.com/security/advisories?name=MDVSA-2013:093 http://www.openwall.com/lists/oss-security/2013/01/29/8 http://www.securityfocus.com/bid/57610 https://exchange.xforce.ibmcloud.com/vulnerabilities/81695 https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0055