CVE-2009-3376
Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a crafted filename, as demonstrated by displaying a non-executable extension for an executable file.
- CVSS 2.0
- 9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
- EPSS
- 3.18% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-16
- Affected
- mozilla/firefox · mozilla/seamonkey
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
- http://secunia.com/advisories/38977
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:294
- http://www.mozilla.org/security/announce/2009/mfsa2009-62.htmlPatch, Vendor Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0153.html
- http://www.redhat.com/support/errata/RHSA-2010-0154.html
- http://www.ubuntu.com/usn/USN-915-1
- http://www.vupen.com/english/advisories/2009/3334
- http://www.vupen.com/english/advisories/2010/0648
- http://www.vupen.com/english/advisories/2010/0650
- https://bugzilla.mozilla.org/show_bug.cgi?id=511521
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11218
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6541
- http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
- http://secunia.com/advisories/38977
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:294
- http://www.mozilla.org/security/announce/2009/mfsa2009-62.htmlPatch, Vendor Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0153.html
- http://www.redhat.com/support/errata/RHSA-2010-0154.html
- http://www.ubuntu.com/usn/USN-915-1
- http://www.vupen.com/english/advisories/2009/3334
- http://www.vupen.com/english/advisories/2010/0648
- http://www.vupen.com/english/advisories/2010/0650
- https://bugzilla.mozilla.org/show_bug.cgi?id=511521
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11218
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6541
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.