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Information disclosure in Mozilla Firefox for iOS



Published: 2020-05-29
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-12404
CWE ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Firefox for iOS
Mobile applications / Apps for mobile phones

Vendor Mozilla

Security Advisory

This security advisory describes one low risk vulnerability.

1) Information disclosure

Severity: Low

CVSSv3: 3.8 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12404

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

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

The vulnerability exists due in native-to-JS bridging implementation that requires a unique token to be passed that ensures non-app code can't call the bridging functions. A remote attacker can create a specially crafted web page, trick the victim into downloading files and obtain token. This token can be used for further attacks against the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Firefox for iOS: 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-19/

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 open a a specially crafted app.

Is there known malware, which exploits this vulnerability?

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