PT-2021-23644 · Portainer · Portainer

Published 2021-10-18 · Updated 2021-10-21 · CVE-2021-42650

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Portainer versions prior to 2.9.1

Description A Cross Site Scripting (XSS) issue exists in the node input box in Custom Templates. This allows for potential exploitation.

Recommendations For versions prior to 2.9.1, update to version 2.9.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the Custom Templates feature until the update is applied. Avoid using the node input box in Custom Templates until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-42650

Affected Products

Portainer

References · 5

• https://github.com/portainer/portainer/pull/5766 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-42650 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42650 · Vendor Advisory
• ❌ https://github.com/purple-WL/Security-vulnerability/blob/main/Portainer%20Custom%20Templates%20xss · Note, Deleted
• https://t.me/cibsecurity/30737 · Telegram Post