{
    "id": "CVE-2004-0493",
    "published": "2004-08-06 04:00:00",
    "last_modified": "2026-06-16 22:05:44",
    "cvss_score": "6.4",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
    "cwe": null,
    "description": "The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.",
    "epss_score": "0.84784",
    "epss_percentile": "0.99703",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:14:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "apache",
            "product": "http_server"
        },
        {
            "vendor": "avaya",
            "product": "converged_communications_server"
        },
        {
            "vendor": "avaya",
            "product": "s8300"
        },
        {
            "vendor": "avaya",
            "product": "s8500"
        },
        {
            "vendor": "avaya",
            "product": "s8700"
        },
        {
            "vendor": "gentoo",
            "product": "linux"
        },
        {
            "vendor": "ibm",
            "product": "http_server"
        },
        {
            "vendor": "trustix",
            "product": "secure_linux"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "371",
            "title": "Apache - Arbitrary Long HTTP Headers Denial of Service",
            "date": "2004-08-02",
            "url": "https://www.exploit-db.com/exploits/371"
        },
        {
            "source": "exploit-db",
            "ref_id": "360",
            "title": "Apache - Arbitrary Long HTTP Headers (Denial of Service)",
            "date": "2004-07-22",
            "url": "https://www.exploit-db.com/exploits/360"
        }
    ],
    "refs_list": [
        "http://lists.grok.org.uk/pipermail/full-disclosure/2004-June/023133.html",
        "http://marc.info/?l=bugtraq&m=108853066800184&w=2",
        "http://marc.info/?l=bugtraq&m=109181600614477&w=2",
        "http://security.gentoo.org/glsa/glsa-200407-03.xml",
        "http://www.apacheweek.com/features/security-20",
        "http://www.guninski.com/httpd1.html",
        "http://www.mandriva.com/security/advisories?name=MDKSA-2004:064",
        "http://www.redhat.com/support/errata/RHSA-2004-342.html",
        "http://www.securityfocus.com/bid/10619",
        "http://www.trustix.org/errata/2004/0039/",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/16524",
        "https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r5001ecf3d6b2bdd0b732e527654248abb264f08390045d30709a92f6%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r734a07156abf332d5ab27fb91d9d962cacfef4f3681e44056f064fa8%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rd65d8ba68ba17e7deedafbf5bb4899f2ae4dad781d21b931c2941ac3%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/re895fc1736d25c8cf57e102c871613b8aeec9ea26fd8a44e7942b5ab%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10605",
        "http://lists.grok.org.uk/pipermail/full-disclosure/2004-June/023133.html"
    ]
}