CVE-2021-33490 : What You Need to Know

OX App Suite through version 7.10.5 is vulnerable to a cross-site scripting (XSS) attack that can be exploited through a specially crafted code in a shared mail signature.

Understanding CVE-2021-33490

This CVE identifies a security vulnerability in OX App Suite that enables attackers to execute XSS attacks using manipulated content within shared mail signatures.

What is CVE-2021-33490?

CVE-2021-33490 highlights a security flaw in OX App Suite versions up to 7.10.5, allowing threat actors to inject malicious code via a crafted snippet in shared mail signatures.

The Impact of CVE-2021-33490

The impact of this vulnerability includes the potential for unauthorized JavaScript execution within the context of the user's web browser when viewing the affected mail message, leading to sensitive data exposure or other malicious activities.

Technical Details of CVE-2021-33490

This section provides insight into the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in OX App Suite arises due to insufficient input sanitization, which enables an attacker to embed malicious code within the shared mail signature, potentially leading to the execution of arbitrary scripts in the context of the victim's session.

Affected Systems and Versions

OX App Suite versions up to 7.10.5 are confirmed to be impacted by this XSS vulnerability, exposing users of these versions to potential security risks.

Exploitation Mechanism

By leveraging a crafted snippet in a shared mail signature, threat actors can carry out XSS attacks to compromise user sessions and execute arbitrary code, jeopardizing data confidentiality and integrity.

Mitigation and Prevention

To safeguard systems from CVE-2021-33490, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

Users should update OX App Suite to a non-vulnerable version immediately to prevent exploitation of this XSS vulnerability. Additionally, exercising caution when interacting with shared mail content can reduce the risk of compromise.

Long-Term Security Practices

Implementing a robust security policy that includes regular security audits, user awareness training, and adherence to secure coding practices can strengthen overall defense against XSS and other security threats.

Patching and Updates

Vendor-supplied patches addressing the XSS vulnerability should be promptly applied to OX App Suite installations to mitigate the risk of exploitation and ensure system security.