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Vulnerability Details : CVE-2021-33484

An issue was discovered in CommentsService.ashx in OnyakTech Comments Pro 3.8. An attacker can download a copy of the installer, decompile it, and discover a hardcoded IV used to encrypt the username and userid in the comment POST request. Additionally, the attacker can decrypt the encrypted encryption key (sent as a parameter in the comment form request) by setting this encrypted value as the username, which will appear on the comment page in its decrypted form. Using these two values (combined with the encryption functionality discovered in the decompiled installer), the attacker can encrypt another user's ID and username. These values can be used as part of the comment posting request in order to spoof the user.
Publish Date : 2021-09-07 Last Update Date : 2021-09-13
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 798

- Products Affected By CVE-2021-33484

# Product Type Vendor Product Version Update Edition Language
1 Application Onyaktech Comments Pro Project Onyaktech Comments Pro 3.8 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Onyaktech Comments Pro Project Onyaktech Comments Pro 1

- References For CVE-2021-33484

- Metasploit Modules Related To CVE-2021-33484

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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