CVE Catalog

CVE-2016-5284

High
Published: Translated: NVD NIST

Summary

Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning. This allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.

Risk Assessment

Organizations may be exposed to attacks that allow the introduction of malicious add-on updates, potentially leading to system and user data compromise.

Recommendation

It is recommended to update Firefox and Thunderbird to the latest versions to mitigate the risk associated with this vulnerability.

Other vulnerabilities in Mozilla Firefox, Firefox ESR, Thunderbird

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Original NVD description (English source)

Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS