CVE-2017-5378: Debian Linux

High severity, CVSS 7.5. EPSS: 3.4% chance of exploitation in the next 30 days.

Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Affected products

• Debian Debian Linux: version 8.0 only
• Mozilla Firefox: before 51.0 (fixed in 51.0); before 45.7.0 (fixed in 45.7.0)
• Mozilla Thunderbird: before 45.7.0 (fixed in 45.7.0)
• Red Hat Enterprise Linux: version 5.0 only; version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server: version 5.0 only; version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.3 only; version 7.4 only
• Red Hat Enterprise Linux Server Eus: version 7.3 only; version 7.4 only; version 7.5 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 6.0 only; version 7.0 only

Published 2018-06-11. Last modified 2026-06-17.