CVE-2009-4484

Exp

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.

Published: 2009-12-30 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4484 is rated High Exploit Risk (77.7/100): CVSS High severity, with high exploitation likelihood (EPSS 75.82%, 99th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-4484

EDB-ID Source Kind Published Link
16850 exploit_db edb 2010-04-30 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4484

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-16 77.76% 75.82% -1.94%
2 2026-02-11 74.61% 77.76% +3.15%
3 2025-12-28 — 74.61% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4484

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2009-4484

OS Trackers for CVE-2009-4484

vendor priority summary link
gentoo high CVE-2009-4484: 1 GLSA(s) (201201-02), 1 atom(s) (dev-db/mysql); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-4484
redhat critical — https://access.redhat.com/security/cve/CVE-2009-4484
ubuntu medium CVE-2009-4484 medium priority: Ubuntu including 3 source packages (mysql-5.1, mysql-dfsg-5.0, mysql-dfsg-5.1), 26 status rows across 9 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, upstream): DNE 13, released 8, ignored 2, needs-triage 2, needed 1. https://ubuntu.com/security/CVE-2009-4484

Vendor comments (NVD) for CVE-2009-4484

  • Red Hat (2010-01-26T00:00:00)

    Not vulnerable. This issue did not affect the versions of mysql as shipped with Red Hat Enterprise Linux 3, 4, or 5. The packages use OpenSSL and not yaSSL.

Affected software / configurations for CVE-2009-4484

Vendor Product Version Raw CPE
oracle mysql >= 5.0.0, < 5.0.90 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
oracle mysql >= 5.1.0, < 5.1.43 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
oracle mysql 5.0.0 cpe:2.3:a:oracle:mysql:5.0.0:milestone1:*:*:*:*:*:*
oracle mysql 5.0.0 cpe:2.3:a:oracle:mysql:5.0.0:milestone2:*:*:*:*:*:*
wolfssl yassl < 1.9.9 cpe:2.3:a:wolfssl:yassl:*:*:*:*:*:*:*:*
canonical ubuntu_linux 6.06 cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
canonical ubuntu_linux 8.04 cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
canonical ubuntu_linux 8.10 cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
canonical ubuntu_linux 9.04 cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
canonical ubuntu_linux 9.10 cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
canonical ubuntu_linux 10.10 cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
canonical ubuntu_linux 11.04 cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
canonical ubuntu_linux 11.10 cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
debian debian_linux 4.0 cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
debian debian_linux 5.0 cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
debian debian_linux 6.0 cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
mariadb mariadb >= 5.1, < 5.1.42 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*

References for CVE-2009-4484

URL Tags
http://archives.neohapsis.com/archives/dailydave/2010-q1/0002.html Broken Link
http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.0/revision/2837.1.1 Broken Link
http://bugs.mysql.com/bug.php?id=50227 Exploit Issue Tracking Vendor Advisory
http://dev.mysql.com/doc/refman/5.0/en/news-5-0-90.html Broken Link
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-43.html Broken Link
http://intevydis.blogspot.com/2010/01/mysq-yassl-stack-overflow.html Broken Link
http://intevydis.com/mysql_demo.html Broken Link
http://intevydis.com/mysql_overflow1.py.txt Broken Link
http://intevydis.com/vd-list.shtml Broken Link
http://isc.sans.org/diary.html?storyid=7900 Third Party Advisory
http://lists.immunitysec.com/pipermail/dailydave/2010-January/006020.html Broken Link
http://lists.mysql.com/commits/96697 Patch Vendor Advisory
http://secunia.com/advisories/37493 Third Party Advisory
http://secunia.com/advisories/38344 Third Party Advisory
http://secunia.com/advisories/38364 Third Party Advisory
http://secunia.com/advisories/38517 Third Party Advisory
http://secunia.com/advisories/38573 Third Party Advisory
http://securitytracker.com/id?1023402 Third Party Advisory VDB Entry
http://securitytracker.com/id?1023513 Third Party Advisory VDB Entry
http://ubuntu.com/usn/usn-897-1 Third Party Advisory
http://www.debian.org/security/2010/dsa-1997 Third Party Advisory
http://www.intevydis.com/blog/?p=106 Broken Link
http://www.intevydis.com/blog/?p=57 Broken Link
http://www.metasploit.com/modules/exploit/linux/mysql/mysql_yassl_getname Third Party Advisory
http://www.osvdb.org/61956 Broken Link
http://www.securityfocus.com/bid/37640 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/37943 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/37974 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-1397-1 Third Party Advisory
http://www.vupen.com/english/advisories/2010/0233 Third Party Advisory
http://www.vupen.com/english/advisories/2010/0236 Third Party Advisory
http://www.yassl.com/news.html#yassl199 Broken Link
http://www.yassl.com/release.html Broken Link
http://yassl.cvs.sourceforge.net/viewvc/yassl/yassl/taocrypt/src/asn.cpp?r1=1.13&r2=1.14 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=555313 Issue Tracking Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/55416 Third Party Advisory VDB Entry
cvelogic Threat Intelligence