{
    "id": "CVE-2007-4924",
    "published": "2007-10-08 21:17:00",
    "last_modified": "2026-06-16 22:45:01",
    "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 Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"",
    "epss_score": "0.10680",
    "epss_percentile": "0.95665",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:06",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "ekiga",
            "product": "ekiga"
        },
        {
            "vendor": "openh323_project",
            "product": "openh323"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "9240",
            "title": "OpenH323 Opal SIP Protocol - Remote Denial of Service",
            "date": "2009-07-24",
            "url": "https://www.exploit-db.com/exploits/9240"
        }
    ],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html",
        "http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html",
        "http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20",
        "http://osvdb.org/41637",
        "http://secunia.com/advisories/27118",
        "http://secunia.com/advisories/27128",
        "http://secunia.com/advisories/27129",
        "http://secunia.com/advisories/27271",
        "http://secunia.com/advisories/27524",
        "http://secunia.com/advisories/28380",
        "http://www.mandriva.com/security/advisories?name=MDKSA-2007:205",
        "http://www.redhat.com/support/errata/RHSA-2007-0957.html",
        "http://www.s21sec.com/avisos/s21sec-037-en.txt",
        "http://www.securityfocus.com/archive/1/482120/30/4500/threaded",
        "http://www.securityfocus.com/bid/25955",
        "http://www.securitytracker.com/id?1018776",
        "http://www.ubuntu.com/usn/usn-562-1",
        "http://www.vupen.com/english/advisories/2007/3413",
        "http://www.vupen.com/english/advisories/2007/3414",
        "https://bugzilla.redhat.com/show_bug.cgi?id=296371",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11398",
        "https://www.exploit-db.com/exploits/9240",
        "http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html",
        "http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html",
        "http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20"
    ]
}