Information disclosure in Mozilla Firefox - CVE-2018-5134
Published: March 13, 2018
Vulnerability identifier: #VU10977
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-5134
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain potentially information on the target system.
The weakness exists due to improper sanitization of user-supplied input. A remote attacker can supply WebExtensions that may use view-source: URLs to view local file: URL content, as well as content stored in about:cache to bypass security restrictions and view specific content.
The weakness exists due to improper sanitization of user-supplied input. A remote attacker can supply WebExtensions that may use view-source: URLs to view local file: URL content, as well as content stored in about:cache to bypass security restrictions and view specific content.
Affected software
Mozilla Firefox
firefox (Ubuntu package)
firefox (Ubuntu package)
How to mitigate CVE-2018-5134
Update to version 59.0.
firefox (Ubuntu package) - addressed in versions 59.0+build5-0ubuntu0.14.04.1, 59.0+build5-0ubuntu0.16.04.1, 59.0+build5-0ubuntu0.17.10.1