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

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU27531

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12389

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due the Firefox content processes did not sufficiently lockdown access control for separate process types. A remote attacker can bypass implemented security restrictions and execute arbitrary code on the target system.

Note, this vulnerability affects Windows versions only.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 60.4.0-r0 - 68.7.0-r2

External links

http://git.alpinelinux.org/aports/commit/?id=397c40a2e03948882e67f7fb7053d46e6dda50d3
http://git.alpinelinux.org/aports/commit/?id=4b76c8208fa0c29e289d14baf509b417f7c96a08
http://git.alpinelinux.org/aports/commit/?id=c9413fd0912a1f1e6cdc9e5fd25d15f4f22cc11a
http://git.alpinelinux.org/aports/commit/?id=1aeb9d76f321c652de13c181f2775af18eb8c42d

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.