Privilege escalation in Deno

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53705

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-32619

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 to the modules that are dynamically imported through "import()" or "new Worker" do not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Deno: 1.5.0 - 1.10.1

CPE2.3

• cpe:2.3:a:deno_land:deno:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:deno_land:deno:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:deno_land:deno:1.5.2:*:*:*:*:*:*:*

External links

https://github.com/denoland/deno/security/advisories/GHSA-xpwj-7v8q-mcgj

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.