CVE-2009-1232

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-04-02 · updated 2026-06-16
Weakness: CWE-20

Description

Mozilla Firefox 3.0.8 and earlier 3.0.x versions allows remote attackers to cause a denial of service (memory corruption) via an XML document composed of a long series of start-tags with no corresponding end-tags. NOTE: it was later reported that 3.0.10 and earlier are also affected.

Affected products

Mozilla Firefox: 3.0, 3.0-alpha, 3.0-beta2, 3.0-beta5, 3.0.1, 3.0.2 (+6)

References

http://milw0rm.com/sploits/2009-Firefox-XUL-0day-PoC.rar
http://websecurity.com.ua/3216/
http://www.securityfocus.com/bid/34522
https://bugzilla.mozilla.org/show_bug.cgi?id=485941
https://exchange.xforce.ibmcloud.com/vulnerabilities/49521
https://www.exploit-db.com/exploits/8306
http://milw0rm.com/sploits/2009-Firefox-XUL-0day-PoC.rar
http://websecurity.com.ua/3216/
http://www.securityfocus.com/bid/34522
https://bugzilla.mozilla.org/show_bug.cgi?id=485941
https://exchange.xforce.ibmcloud.com/vulnerabilities/49521
https://www.exploit-db.com/exploits/8306

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