Vulnerability identifier: #VU72248

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-25728

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the Content-Security-Policy-Report-Only header can leak a child iframe's unredacted URI when interaction with that iframe triggers a redirect. A remote attacker can gain access to potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 109.0.1

Firefox ESR: 102.0 - 102.7.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2023-05/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-06/

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Q & A

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.