Vulnerability identifier: #VU64759
Vulnerability risk: Low
CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-807
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Mozilla Firefox
Client/Desktop applications /
Web browsers
Vendor: Mozilla
Description
The vulnerability allows a remote attacker to force downgrade existing browser addons.
The vulnerability exists due to missing verification of the advertised version when installing addon updates. When downloading an update for an addon, the downloaded addon update's version is not verified to match the version selected from the manifest. If the manifest had been tampered with on the server, an attacker could trick the browser into downgrading the addon to a prior version.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Mozilla Firefox: 92.0 - 101.0.1
External links
http://www.mozilla.org/en-US/security/advisories/mfsa2022-24/
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.