CVE-2021-40398 : Security Advisory and Response
Learn about CVE-2021-40398, an out-of-bounds write vulnerability in Accusoft ImageGear 19.10, impacting confidentiality, integrity, and availability. Find mitigation steps and prevention measures here.
Accusoft ImageGear 19.10 has been found to have an out-of-bounds write vulnerability that can result in memory corruption if a specially-crafted malformed file is processed.
Understanding CVE-2021-40398
This section provides detailed insights into the vulnerability and its impact.
What is CVE-2021-40398?
The CVE-2021-40398 vulnerability involves an out-of-bounds write issue in the parse_raster_data function of Accusoft ImageGear 19.10. It enables an attacker to exploit a malicious file, leading to memory corruption.
The Impact of CVE-2021-40398
The vulnerability has the following impact based on CVSS v3.0 metrics:
- Base Score: 8.1 (High)
- Base Severity: High
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2021-40398
Explore the technical aspects of the vulnerability to understand affected systems and exploitation mechanisms.
Vulnerability Description
The vulnerability is categorized as CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer due to the out-of-bounds write issue in Accusoft ImageGear 19.10.
Affected Systems and Versions
- Affected Product: ImageGear
- Vendor: Accusoft
- Affected Version: 19.10
Exploitation Mechanism
An attacker can trigger the vulnerability by providing a specially-crafted malformed file to the parse_raster_data function.
Mitigation and Prevention
Discover the steps to mitigate the risk and prevent exploitation of CVE-2021-40398.
Immediate Steps to Take
- Update ImageGear to a patched version.
- Restrict file input from untrusted sources.
- Implement network-level security controls.
Long-Term Security Practices
- Regular security training for developers to identify and prevent similar vulnerabilities.
- Conduct periodic vulnerability assessments and code reviews.
Patching and Updates
Timely apply security patches provided by Accusoft to address the out-of-bounds write vulnerability in ImageGear.