PRIOn knowledge basePRION:CVE-2013-0238Design/Logic Flaw
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.
References
bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
osvdb.org/89623
secunia.com/advisories/51948
secunia.com/advisories/52106
svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786
www.debian.org/security/2013/dsa-2618
www.mandriva.com/security/advisories?name=MDVSA-2013:093
www.openwall.com/lists/oss-security/2013/01/29/8
www.securityfocus.com/bid/57610
exchange.xforce.ibmcloud.com/vulnerabilities/81695
wiki.mageia.org/en/Support/Advisories/MGASA-2013-0055
www.exploit-db.com/exploits/24951
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