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CVE-2013-0238

5.0 · MEDIUM

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 caus…

Published Feb 13, 2013ircd-hybridCWE-20EPSS 9.96%

Overview

CVE-2013-0238 is a medium-severity vulnerability affecting ircd-hybrid ircd-hybrid. It was published on February 13, 2013 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from ircd-hybrid. Update ircd-hybrid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
ircd-hybridircd-hybrid0Affected

References

Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=699267Refosvdb.org/89623Refsecunia.com/advisories/51948Refsecunia.com/advisories/52106Refsvn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786Refwww.debian.org/security/2013/dsa-2618Refwww.exploit-db.com/exploits/24951Refwww.mandriva.com/security/advisories?name=MDVSA-2013:093Refwww.openwall.com/lists/oss-security/2013/01/29/8Refwww.securityfocus.com/bid/57610

How CyberStrike helps

Frequently asked questions

What is CVE-2013-0238?

CVE-2013-0238 is a medium-severity vulnerability affecting ircd-hybrid ircd-hybrid. It was published on February 13, 2013 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2013-0238?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-0238?

Check the references section for vendor advisories and patches from ircd-hybrid. Update ircd-hybrid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-0238?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-0238 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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