CVE-2023-47263 : Security Advisory and Response
Learn about CVE-2023-47263, a Denial of Service vulnerability affecting WithSecure security solutions. Explore the impact, affected systems, exploitation mechanism, and mitigation steps.
A Denial of Service (DoS) vulnerability has been identified in certain WithSecure products due to issues in the antivirus engine when handling a specific type of file. This CVE affects various WithSecure security solutions.
Understanding CVE-2023-47263
This section dives into the details of the vulnerability and its impact on WithSecure products.
What is CVE-2023-47263?
CVE-2023-47263 is a vulnerability in WithSecure products that allows an attacker to launch a Denial of Service attack by exploiting the antivirus engine's behavior when scanning a certain file type.
The Impact of CVE-2023-47263
The vulnerability impacts the reliability and availability of the affected WithSecure security products, potentially leading to service disruption and system unresponsiveness.
Technical Details of CVE-2023-47263
Let's explore the technical aspects of the CVE in more detail.
Vulnerability Description
The vulnerability arises in the antivirus engine of WithSecure products when processing a fuzzed PE32 file, leading to a DoS condition.
Affected Systems and Versions
WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, WithSecure Linux Security 64 12.0, WithSecure Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 15 and later are affected by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by an attacker by crafting a specifically malformed PE32 file and triggering the antivirus engine to scan it, causing a DoS condition.
Mitigation and Prevention
In this section, we discuss steps to mitigate the impact of CVE-2023-47263 on WithSecure products.
Immediate Steps to Take
WithSecure users are advised to implement workarounds provided by the vendor, such as disabling certain scanning features or applying specific configurations to reduce the risk of exploitation.
Long-Term Security Practices
Ensuring timely software updates and patches from WithSecure can help in addressing this vulnerability and enhancing the overall security posture of the affected products.
Patching and Updates
Users should regularly check for security advisories and updates from WithSecure to apply patches that address the CVE-2023-47263 vulnerability and other potential security risks.