Vulnerability identifier: #VU29313

Vulnerability risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-12414

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Firefox for iOS
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 the IndexedDB should be cleared when leaving private browsing mode and it is not, the API for "WKWebViewConfiguration" was being used incorrectly and requires the private instance of this object be deleted when leaving private mode.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefox for iOS: 8.0 - 26.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2020-23/

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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. However, proof of concept for this vulnerability is available.