PT-2021-10886 · Unknown · Nibbleblog

Peng-Hui · Published 2021-01-27 · Updated 2021-07-21 · CVE-2020-23356

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 nibbleblog version 3.7.1c

Description The issue allows for a login bypass due to type juggling in password hashes. This occurs because the code uses == instead of === for comparing password hashes, which can mishandle hashes starting with '0e' followed by numerical characters.

Recommendations For nibbleblog version 3.7.1c, consider updating the login.class.php file to use === for password hash comparisons instead of == to prevent type juggling attacks. As a temporary workaround, restrict access to the login.class.php file to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2020-23356

Affected Products

Nibbleblog

References · 4

• https://osv.dev/vulnerability/CVE-2020-23356 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-23356 · Security Note
• https://github.com/dignajar/nibbleblog/pull/148 · Note
• https://t.me/cibsecurity/22713 · Telegram Post