Privilege escalation in Deno



Published: 2021-06-01
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-32619
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Deno
Web applications / Modules and components for CMS

Vendor Deno Land

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53705

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-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

External links

http://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.



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