CVE-2021-25964 : Exploit Details and Defense Strategies
Discover how CVE-2021-25964 exposes a Stored XSS vulnerability in Calibre-web, impacting versions 0.6.0 to 0.6.12. Learn about the risks, exploitation, and mitigation steps.
Calibre-web application versions 0.6.0 to 0.6.12 are vulnerable to Stored XSS in the Metadata section. Attackers can inject malicious JavaScript into the description field, triggering XSS when users open the file.
Understanding CVE-2021-25964
This CVE identifies a Stored XSS vulnerability in Calibre-web versions 0.6.0 to 0.6.12, allowing attackers to execute malicious scripts through the Metadata section.
What is CVE-2021-25964?
CVE-2021-25964 exposes a security flaw in Calibre-web that enables attackers to insert harmful JavaScript code via the Metadata field, leading to potential cross-site scripting attacks.
The Impact of CVE-2021-25964
The vulnerability poses a medium-severity risk with a CVSS base score of 5.4, allowing for unauthorized code execution and possible data exposure.
Technical Details of CVE-2021-25964
This section dives into the specifics of the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The flaw enables threat actors to embed malicious scripts within the Metadata description, exploiting user interactions to launch XSS attacks.
Affected Systems and Versions
Calibre-web versions 0.6.0 to 0.6.12 are impacted by this vulnerability, leaving them susceptible to stored XSS attacks.
Exploitation Mechanism
Attackers with edit access to the Metadata section can insert JavaScript payloads into the description field, compromising user security upon file access.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks associated with CVE-2021-25964 and prevent future vulnerabilities.
Immediate Steps to Take
Ensure all Calibre-web instances are updated to version 0.6.13 to patch the XSS vulnerability and enhance system security.
Long-Term Security Practices
Implement regular security audits, educate users on safe browsing habits, and monitor Metadata entries to prevent XSS injections.
Patching and Updates
Stay informed about security patches and updates released by Calibre-web to address emerging threats and safeguard systems.