CVE-2021-32062 : Vulnerability Insights and Analysis
Learn about CVE-2021-32062 impacting MapServer versions before 7.6.3, allowing unauthorized access to mapfiles. Find mitigation steps and update information here.
MapServer before versions 7.0.8, 7.1.x, 7.2.x, 7.3.x, 7.4.x, and 7.5.x does not properly enforce certain restrictions, potentially allowing unauthorized access through mapfile loading.
Understanding CVE-2021-32062
This CVE impacts MapServer versions prior to 7.6.3, where restrictions related to mapfile loading are not correctly enforced.
What is CVE-2021-32062?
The vulnerability in MapServer versions before 7.6.3 allows for potential circumvention of restrictions intended to control mapfile loading locations through MapServer CGI.
The Impact of CVE-2021-32062
This vulnerability could be exploited by attackers to load mapfiles from unauthorized locations, leading to unauthorized access and potential security breaches.
Technical Details of CVE-2021-32062
In this section, we will delve into the technical details of CVE-2021-32062.
Vulnerability Description
MapServer before 7.6.3 fails to properly apply MS_MAP_NO_PATH and MS_MAP_PATTERN restrictions, which are crucial for controlling the locations from which a mapfile can be loaded.
Affected Systems and Versions
CVE-2021-32062 affects MapServer versions prior to 7.6.3, including 7.0.8, 7.1.x, 7.2.x, 7.3.x, 7.4.x, and 7.5.x.
Exploitation Mechanism
By exploiting this vulnerability, threat actors may bypass restrictions meant to dictate authorized mapfile loading locations, potentially enabling them to load mapfiles from unauthorized sources.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-32062, consider the following steps:
Immediate Steps to Take
- Upgrade MapServer to version 7.6.3 or newer to address this vulnerability.
- Restrict network access to MapServer instances to trusted sources only.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from MapServer.
- Implement strong access controls and authentication mechanisms.
Patching and Updates
MapServer has released versions 7.6.3 and above, which contain fixes for CVE-2021-32062. Ensure timely patching and updates to protect your systems.