{
    "id": "CVE-2009-0537",
    "published": "2009-03-09 21:30:00",
    "last_modified": "2026-06-16 23:05:15",
    "cvss_score": "4.9",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
    "cwe": "CWE-189",
    "description": "Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.",
    "epss_score": "0.03592",
    "epss_percentile": "0.89079",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-03 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "interix"
        },
        {
            "vendor": "openbsd",
            "product": "openbsd"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "8163",
            "title": "Libc - 'libc:fts_*()' Local Denial of Service",
            "date": "2009-03-05",
            "url": "https://www.exploit-db.com/exploits/8163"
        }
    ],
    "refs_list": [
        "http://securityreason.com/achievement_securityalert/60",
        "http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c",
        "http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41%3Br2=1.42%3Bf=h",
        "http://www.securityfocus.com/archive/1/501505/100/0/threaded",
        "http://www.securityfocus.com/bid/34008",
        "http://www.securitytracker.com/id?1021818",
        "https://www.exploit-db.com/exploits/8163",
        "http://securityreason.com/achievement_securityalert/60",
        "http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c",
        "http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41%3Br2=1.42%3Bf=h",
        "http://www.securityfocus.com/archive/1/501505/100/0/threaded",
        "http://www.securityfocus.com/bid/34008",
        "http://www.securitytracker.com/id?1021818",
        "https://www.exploit-db.com/exploits/8163"
    ]
}