CVE-2023-39276 Explained : Impact and Mitigation
Learn about CVE-2023-39276, a critical stack-based buffer overflow vulnerability in SonicOS impacting SonicWall firewalls. Find out about affected versions and mitigation steps.
A post-authentication stack-based buffer overflow vulnerability in SonicOS has been identified, leading to a firewall crash. Here is a detailed overview of CVE-2023-39276.
Understanding CVE-2023-39276
SonicOS, a firewall operating system developed by SonicWall, is affected by a critical vulnerability that could be exploited to trigger a firewall crash.
What is CVE-2023-39276?
The vulnerability occurs in the getBookmarkList.json URL endpoint, allowing an attacker to execute a stack-based buffer overflow post-authentication, resulting in a denial of service condition.
The Impact of CVE-2023-39276
Exploitation of this vulnerability could lead to a firewall crash, disrupting normal operations and potentially enabling further malicious activities on the affected system.
Technical Details of CVE-2023-39276
This section provides a closer look at the vulnerability specifics.
Vulnerability Description
The post-authentication stack-based buffer overflow vulnerability in the getBookmarkList.json URL endpoint of SonicOS can be leveraged by threat actors to cause a firewall crash.
Affected Systems and Versions
SonicOS versions 7.0.1-5119 and earlier, 7.0.1-5129 and earlier, 6.5.4.4-44v-21-2079 and earlier, as well as 6.5.4.12-101n and earlier are confirmed to be affected by this vulnerability.
Exploitation Mechanism
By sending specially crafted requests to the getBookmarkList.json endpoint, attackers can trigger the stack-based buffer overflow, leading to a firewall crash.
Mitigation and Prevention
Discover the necessary steps to secure your system and prevent exploitation.
Immediate Steps to Take
It is recommended to apply the security patches provided by SonicWall to address the vulnerability and prevent potential attacks targeting the getBookmarkList.json endpoint.
Long-Term Security Practices
Ensure timely updates and patches for your SonicOS devices to mitigate the risk of similar vulnerabilities and enhance overall security posture.
Patching and Updates
Stay informed about security advisories and updates from SonicWall to protect your systems against known vulnerabilities and maintain a secure environment.