Vulnerability identifier: #VU29452
Vulnerability risk: Medium
Exploitation vector: Network
Exploit availability: No
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.
Install updates from vendor's website.
Vulnerable software versions
Mozilla Firefox: 70.0 - 77.0.1
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.