VulnerabilityModified
CVE-2013-0238
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.
MEDIUM 5.0EPSS 9.96%
Does this matter?
Lower severity and a low EPSS score (9.96%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 9.96% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ircd-hybrid/ircd-hybrid
- Source
- secalert@redhat.com
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
- http://osvdb.org/89623
- http://secunia.com/advisories/51948Vendor Advisory
- http://secunia.com/advisories/52106Vendor Advisory
- 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
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
- http://osvdb.org/89623
- http://secunia.com/advisories/51948Vendor Advisory
- http://secunia.com/advisories/52106Vendor Advisory
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.