Information disclosure in Mozilla Firefox for iOS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-12414
CWE-ID CWE-200
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Firefox for iOS
Mobile applications / Apps for mobile phones

Vendor Mozilla

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU29313

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-12414

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

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

CPE2.3 External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-23/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

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.



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