Permissions, Privileges, and Access Controls in firefox (Alpine package)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU49017

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26975

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local application to bypass implemented security restrictions.

The vulnerability exists due to application does not properly impose security restrictions. When a malicious application installed on the user's device broadcast an Intent to Firefox for Android, arbitrary headers could have been specified, leading to attacks such as abusing ambient authority or session fixation. This was resolved by only allowing certain safe-listed headers

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox (Alpine package): 83.0-r1

External links

http://git.alpinelinux.org/aports/commit/?id=51da4407bcde0c8c3633243432ef1cb66575f747

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.