#VU46260 Race condition in Firefox for Android - CVE-2020-15671

Vulnerability identifier: #VU46260

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-15671

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Firefox for Android
Mobile applications / Apps for mobile phones

Vendor: Mozilla

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a race condition when saving passwords. When typing in a password under certain conditions, a race may have occured where the InputContext was not being correctly set for the input field, resulting in the typed passwod being saved to the keyboard dictionary.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefox for Android: 66.0.4 - 79.0.4

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2020-39/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.