#VU80101 Information disclosure in Mozilla products - CVE-2023-4583

Vulnerability identifier: #VU80101

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-4583

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
Firefox for Android
Mobile applications / Apps for mobile phones

Vendor: Mozilla

Description

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

The vulnerability exists due to private session data are not cleared in HttpBaseChannel when closing private window. A remote attacker can obtain information from the not cleared session.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 115.0 - 116.0.3

Firefox ESR: 115.0 - 115.1.0

Firefox for Android: 115.0 - 116.3.0

---

External links
https://www.mozilla.org/en-US/security/advisories/mfsa2023-34/
https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/

---

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.