Vulnerability identifier: #VU53714

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-29962

CWE-ID:

Exploitation vector: Network

Exploit availability:

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

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application when processing multiple popups. A remote attacker can create a specially crafted webpage that opens multiple popups, which would make the Firefox for Android become unstable and hard-to-recover.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefox for Android: 80.1.2 - 88.1.4

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Fixed software versions

CPE

• cpe:2.3:a:mozilla:firefox_for_android:88.1.4:*:*:*:*:*:*:*

External links
http://www.mozilla.org/en-US/security/advisories/mfsa2021-23/

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?