Mozilla Firefox Download Filename Spoofing Vulnerability

• Email
• Facebook
• 
  Twitter
• Google+
• Linkedin

  Severity: CRITICAL

  CVE Identifier: CVE-2009-3376

  Advisory Date: FEB 15, 2011

---

  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.

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1003797

  Trend Micro Deep Security DPI Rule Name: 1003797 - Mozilla Firefox Download Filename Spoofing Vulnerability

  AFFECTED SOFTWARE AND VERSION

• mozilla firefox 3.0
• mozilla firefox 3.0.1
• mozilla firefox 3.0.10
• mozilla firefox 3.0.11
• mozilla firefox 3.0.12
• mozilla firefox 3.0.13
• mozilla firefox 3.0.2
• mozilla firefox 3.0.3
• mozilla firefox 3.0.4
• mozilla firefox 3.0.5
• mozilla firefox 3.0.6
• mozilla firefox 3.0.7
• mozilla firefox 3.0.8
• mozilla firefox 3.0.9
• mozilla firefox 3.5.1
• mozilla firefox 3.5.2
• mozilla firefox 3.5.3
• mozilla seamonkey 1.0
• mozilla seamonkey 1.0.1
• mozilla seamonkey 1.0.2
• mozilla seamonkey 1.0.3
• mozilla seamonkey 1.0.4
• mozilla seamonkey 1.0.5
• mozilla seamonkey 1.0.6
• mozilla seamonkey 1.0.7
• mozilla seamonkey 1.0.8
• mozilla seamonkey 1.0.9
• mozilla seamonkey 1.1
• mozilla seamonkey 1.1.1
• mozilla seamonkey 1.1.10
• mozilla seamonkey 1.1.11
• mozilla seamonkey 1.1.12
• mozilla seamonkey 1.1.13
• mozilla seamonkey 1.1.14
• mozilla seamonkey 1.1.15
• mozilla seamonkey 1.1.16
• mozilla seamonkey 1.1.17
• mozilla seamonkey 1.1.2
• mozilla seamonkey 1.1.3
• mozilla seamonkey 1.1.4
• mozilla seamonkey 1.1.5
• mozilla seamonkey 1.1.6
• mozilla seamonkey 1.1.7
• mozilla seamonkey 1.1.8
• mozilla seamonkey 1.1.9
• mozilla seamonkey 1.5.0.10
• mozilla seamonkey 1.5.0.8
• mozilla seamonkey 1.5.0.9