CVE-2009-2477
js/src/jstracer.cpp in the Just-in-time (JIT) JavaScript compiler (aka TraceMonkey) in Mozilla Firefox 3.5 before 3.5.1 allows remote…
- 9.3HighCVSS base score
- 42.5%Exploitation in 30 daysEPSS · top 1.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 5Public exploitsMetasploit, Nuclei and Exploit-DB
Description
js/src/jstracer.cpp in the Just-in-time (JIT) JavaScript compiler (aka TraceMonkey) in Mozilla Firefox 3.5 before 3.5.1 allows remote attackers to execute arbitrary code via certain use of the escape function that triggers access to uninitialized memory locations, as originally demonstrated by a document containing P and FONT elements.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 4 Exploit-DB entries for it. 3 references of the record are tagged as an exploit.
Show the exploits8
Metasploit modules1 module
- Firefox 3.5 escape() Return Value Memory Corruption (Metasploit module) (opens in a new tab)
exploit/multi/browser/firefox_escape_retvalRank normaldisclosed 13 Jul 2009
Exploit-DB4 entries
- Naenara Browser 3.5 (RedStar 3.0 Desktop) - 'JACKRABBIT' Client-Side Command Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 40936local, linuxpublished 18 Dec 2016Verified
- Mozilla Firefox 3.5 - 'escape()' Return Value Memory Corruption (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16299remote, multiplepublished 20 Sept 2010Verified
- Mozilla Firefox 3.5 - 'Font tags' Remote HeapSpray (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 9214remote, windowspublished 20 Jul 2009Verified
- Mozilla Firefox 3.5 - Font tags Remote Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 9137remote, windowspublished 13 Jul 2009Verified
References tagged exploit3 references
- 40936 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 9181 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 9137 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 42.5% · top 1.3% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Affected products
n/a
- affected n/a
References
References15
- https://bugzilla.mozilla.org/show_bug.cgi?id=503286 (opens in a new tab)x_refsource_CONFIRMx_transferred
- VU#443060 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- FEDORA-2009-7898 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 40936 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://voices.washingtonpost.com/securityfix/2009/07/stopgap_fix_for_critical_firef.html (opens in a new tab)x_refsource_MISCx_transferred
- http://isc.sans.org/diary.html?storyid=6796 (opens in a new tab)x_refsource_MISCx_transferred
- 266148 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 35660 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 9181 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 35798 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://blog.mozilla.com/security/2009/07/14/critical-javascript-vulnerability-in-firefox-35/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-1868 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 9137 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://www.h-online.com/security/First-Zero-Day-Exploit-for-Firefox-3-5--/news/113761 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-41.html (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-2472 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-2477)Record last updated .