PT-2021-10884 · Z Blogphp · Z-Blogphp

Published 2021-01-27 · Updated 2021-02-04 · CVE-2020-23352

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Z-BlogPHP version 1.6.0 Valyria

Description The issue is related to incorrect access control in Z-BlogPHP. It is possible to bypass authentication using PHP loose comparison and a magic hash. The passwordvisit input password() function in zb user/plugin/passwordvisit/include.php uses loose comparison for authentication, which can be bypassed with magic hash values.

Recommendations For Z-BlogPHP version 1.6.0 Valyria, consider disabling the passwordvisit input password() function until a patch is available to prevent exploitation. Restrict access to the zb user/plugin/passwordvisit/include.php file to minimize the risk of unauthorized access. Avoid using loose comparison for authentication in the passwordvisit input password() function to prevent bypassing authentication via magic hash values.

Fix

Related Identifiers

CVE-2020-23352

Affected Products

Z-Blogphp

References · 4

• https://github.com/zblogcn/zblogphp/commit/a67607fc984f976d6b36b8870dffaabd9d6c9d5e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-23352 · Security Note
• https://osv.dev/vulnerability/CVE-2020-23352 · Vendor Advisory
• https://t.me/cibsecurity/22714 · Telegram Post