{
    "id": "CVE-2013-0238",
    "published": "2013-02-13 01:55:04",
    "last_modified": "2026-06-16 23:49:01",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "cwe": "CWE-20",
    "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.",
    "epss_score": "0.09962",
    "epss_percentile": "0.95444",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "ircd-hybrid",
            "product": "ircd-hybrid"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "24951",
            "title": "ircd-hybrid 8.0.5 - Denial of Service",
            "date": "2013-04-12",
            "url": "https://www.exploit-db.com/exploits/24951"
        }
    ],
    "refs_list": [
        "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",
        "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"
    ]
}