Vulnerability identifier: #VU32932

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15661

CWE-ID: CWE-264

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 bypass implemented security restrictions.

The vulnerability exists due to a rogue webpage could override the injected WKUserScript used by the logins autofill. A remote attacker can gain access to user's passwords for the current domain.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefox for iOS: 20.0 - 27.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2020-34/

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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.