{
    "id": "CVE-2009-4484",
    "published": "2009-12-30 21:30:00",
    "last_modified": "2026-06-16 23:13:45",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-787",
    "description": "Multiple stack-based buffer overflows in the CertDecoder::GetName function in src/asn.cpp in TaoCrypt in yaSSL before 1.9.9, as used in mysqld in MySQL 5.0.x before 5.0.90, MySQL 5.1.x before 5.1.43, MySQL 5.5.x through 5.5.0-m2, and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and daemon crash) by establishing an SSL connection and sending an X.509 client certificate with a crafted name field, as demonstrated by mysql_overflow1.py and the vd_mysql5 module in VulnDisco Pack Professional 8.11. NOTE: this was originally reported for MySQL 5.0.51a.",
    "epss_score": "0.69552",
    "epss_percentile": "0.99345",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "mariadb",
            "product": "mariadb"
        },
        {
            "vendor": "oracle",
            "product": "mysql"
        },
        {
            "vendor": "wolfssl",
            "product": "yassl"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "16850",
            "title": "MySQL - yaSSL CertDecoder::GetName Buffer Overflow (Metasploit)",
            "date": "2010-04-30",
            "url": "https://www.exploit-db.com/exploits/16850"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/dailydave/2010-q1/0002.html",
        "http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.0/revision/2837.1.1",
        "http://bugs.mysql.com/bug.php?id=50227",
        "http://dev.mysql.com/doc/refman/5.0/en/news-5-0-90.html",
        "http://dev.mysql.com/doc/refman/5.1/en/news-5-1-43.html",
        "http://intevydis.blogspot.com/2010/01/mysq-yassl-stack-overflow.html",
        "http://intevydis.com/mysql_demo.html",
        "http://intevydis.com/mysql_overflow1.py.txt",
        "http://intevydis.com/vd-list.shtml",
        "http://isc.sans.org/diary.html?storyid=7900",
        "http://lists.immunitysec.com/pipermail/dailydave/2010-January/006020.html",
        "http://lists.mysql.com/commits/96697",
        "http://secunia.com/advisories/37493",
        "http://secunia.com/advisories/38344",
        "http://secunia.com/advisories/38364",
        "http://secunia.com/advisories/38517",
        "http://secunia.com/advisories/38573",
        "http://securitytracker.com/id?1023402",
        "http://securitytracker.com/id?1023513",
        "http://ubuntu.com/usn/usn-897-1",
        "http://www.debian.org/security/2010/dsa-1997",
        "http://www.intevydis.com/blog/?p=106",
        "http://www.intevydis.com/blog/?p=57",
        "http://www.metasploit.com/modules/exploit/linux/mysql/mysql_yassl_getname",
        "http://www.osvdb.org/61956"
    ]
}