Vulnerability Monitor

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CVE-2013-6673

Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 do not recognize a user's removal of trust from an EV X.509 certificate, which makes it easier for man-in-the-middle attackers to spoof SSL servers in opportunistic circumstances via a valid certificate that is unacceptable to the user.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 9 products from fedoraproject, from mozilla, from mozilla and 6 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-12-11T15:55:13.323

Last Modified

2025-11-25T17:50:16.803

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-310
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System fedoraproject fedora 18 Yes
Operating System fedoraproject fedora 19 Yes
Operating System fedoraproject fedora 20 Yes
Application mozilla firefox < 26.0 Yes
Application mozilla firefox < 24.2 Yes
Application mozilla seamonkey < 2.23 Yes
Application mozilla thunderbird < 24.2 Yes
Application suse suse_linux_enterprise_software_development_kit 11.0 Yes
Operating System opensuse opensuse 12.2 Yes
Operating System opensuse opensuse 12.3 Yes
Operating System opensuse opensuse 13.1 Yes
Operating System suse linux_enterprise_desktop 11 Yes
Operating System suse linux_enterprise_server 11 Yes
Operating System suse linux_enterprise_server 11 Yes
Operating System canonical ubuntu_linux 12.04 Yes
Operating System canonical ubuntu_linux 12.10 Yes
Operating System canonical ubuntu_linux 13.04 Yes
Operating System canonical ubuntu_linux 13.10 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For fedoraproject's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.