Vulnerability identifier: #VU58612
Vulnerability risk: Low
Exploitation vector: Network
Exploit availability: No
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way Firefox handles XMLHttpRequest requests. A remote attacker can initiate a XMLHttpRequest and identify installed applications by probing error messages for loading external protocols.
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Vulnerable software versions
Mozilla Firefox: 90.0 - 94.0.2
Firefox ESR: 91.0 - 91.3.0
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.