#VU29452 Input validation error in Mozilla Firefox - CVE-2020-12417

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Main Vulnerability Database Vulnerabilities #VU29452

#VU29452 Input validation error in Mozilla Firefox - CVE-2020-12417

Published: July 2, 2020 / Updated: July 31, 2020


Vulnerability identifier: #VU29452
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-12417
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mozilla Firefox
Software vendor:
Mozilla

Description

The vulnerability allows a remote attacker to perform cache poisoning attack.

The vulnerability exists due to an error when processing the %2F character in a manifest URL, which results in Firefox's AppCache behavior to become confused and allowe a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory.



Remediation

Install updates from vendor's website.

External links