PT-2020-13568 · Craft Cms · Knock Knock

Paweł Hałdrzyński · Published 2020-05-25 · Updated 2022-05-24 · CVE-2020-13485

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Knock Knock plugin versions prior to 1.2.8

Description The issue allows IP Whitelist bypass via an X-Forwarded-For HTTP header. This means that an attacker can potentially bypass the IP whitelist by manipulating the X-Forwarded-For header in HTTP requests.

Recommendations For versions prior to 1.2.8, update to version 1.2.8 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive areas of the Craft CMS to minimize the risk of exploitation. Avoid relying solely on the IP Whitelist for security until the update is applied.

Exploit

Fix

Weakness Enumeration

CWE-697

Related Identifiers

CVE-2020-13485

GHSA-WXVR-QQM7-6H65

Affected Products

Knock Knock

References · 7

• 🔥 https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms · Exploit
• https://osv.dev/vulnerability/CVE-2020-13485 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-wxvr-qqm7-6h65 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-13485 · Security Note
• https://github.com/verbb/knock-knock · Note
• https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md · Note
• https://t.me/cvenotify/4040 · Telegram Post