CVE-2009-1828

Firefox - Denial of Service via KEYGEN Element with Automatic Refresh

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-1828. PoCs published by Thierry Zoller.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service (DoS) vulnerability in Firefox by leveraging the KEYGEN tag to create an endless loop when combined with a JavaScript onload event. The loop causes the browser to become unresponsive and leak memory.

Description

Mozilla Firefox 3.0.10 allows remote attackers to cause a denial of service (infinite loop, application hang, and memory consumption) via a KEYGEN element in conjunction with (1) a META element specifying automatic page refresh or (2) a JavaScript onLoad event handler for a BODY element. NOTE: it was later reported that earlier versions are also affected.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Thierry Zoller · textdosmultiple
https://www.exploit-db.com/exploits/8822

This exploit demonstrates a denial-of-service (DoS) vulnerability in Firefox by leveraging the KEYGEN tag to create an endless loop when combined with a JavaScript onload event. The loop causes the browser to become unresponsive and leak memory.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Firefox 3.0.10 (Windows) and likely all versions supporting the KEYGEN tag
No auth needed
Prerequisites: A target running a vulnerable version of Firefox · Ability to deliver the malicious HTML page to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (11)

Core 11
Core References
Third Party Advisory mailing-list x_refsource_fulldisc
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0263.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/50838
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/506328/100/100/threaded
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5928
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/8822
Various Sources x_refsource_misc
http://websecurity.com.ua/3194/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/35132
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/503876/100/0/threaded

Scores

EPSS 0.0878
EPSS Percentile 94.5%

Details

CWE
CWE-399
Status published
Products (1)
mozilla/firefox 3.0.10
Published May 29, 2009
Tracked Since Feb 18, 2026