CVE-2020-12415

Medium

Description

When "%2F" was present in a manifest URL, Firefox's AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78.

SeverityMedium

CVSS6.5

Exploit probability70. percentile1.3%

Product

Mozilla Firefox

PublishedJul 9, 2020

First seenJul 9, 2020

How to fix

Update

mozilla firefox78.0 or later

Vendor advisories

security.gentoo.org/glsa/202007-10

Affected products

Product	Affected versions	Fixed in
mozilla firefox	v < 78.0	78.0
opensuse leap	15.1, 15.2	—

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