PT-2022-9762 · Unknown · Impresscms

Egix · Published 2022-03-25 · Updated 2022-03-30 · CVE-2021-26600

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions ImpressCMS versions prior to 1.4.3

Description The issue is related to a type confusion in the autologin.php file within the plugins/preloads directory, leading to an Authentication Bypass. This occurs due to the use of the != operator instead of the !== operator.

Recommendations For versions prior to 1.4.3, update to version 1.4.3 or later to resolve the issue. As a temporary workaround, consider disabling the autologin feature until a patch is available.

Exploit

Fix

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

CVE-2021-26600

GHSA-M8XH-CQC2-5Q6F

Affected Products

Impresscms

References · 11

• 🔥 https://hackerone.com/reports/1081986 · Exploit
• 🔥 http://seclists.org/fulldisclosure/2022/Mar/43 · Exploit
• 🔥 http://packetstormsecurity.com/files/166393/ImpressCMS-1.4.2-Authentication-Bypass.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-26600 · Security Note
• https://osv.dev/vulnerability/GHSA-m8xh-cqc2-5q6f · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26600 · Vendor Advisory
• https://github.com/ImpressCMS/impresscms/releases/tag/v1.4.3 · Note
• https://github.com/ImpressCMS/impresscms · Note
• https://t.me/defcon_news/98628 · Telegram Post
• https://t.me/cibsecurity/39624 · Telegram Post
• http://karmainsecurity.com/KIS-2022-01 · Note