CVE-2021-28378 : Security Advisory and Response
Learn about CVE-2021-28378, a cross-site scripting (XSS) vulnerability in Gitea versions 1.12.x and 1.13.x before 1.13.4. Understand the impact, technical details, and mitigation steps.
Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.
Understanding CVE-2021-28378
This article discusses the impact, technical details, and mitigation strategies related to CVE-2021-28378.
What is CVE-2021-28378?
CVE-2021-28378 pertains to a cross-site scripting (XSS) vulnerability found in Gitea versions 1.12.x and 1.13.x before 1.13.4. This security flaw allows attackers to execute malicious scripts in a victim's web browser through manipulated issue data.
The Impact of CVE-2021-28378
The impact of this vulnerability is considered low, with a base severity rating of LOW under the CVSS v3.1 scoring system. However, it poses a risk to the confidentiality and integrity of affected systems.
Technical Details of CVE-2021-28378
Let's delve into the specifics of this vulnerability.
Vulnerability Description
The XSS vulnerability in Gitea allows threat actors to inject and execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions.
Affected Systems and Versions
Gitea versions 1.12.x and 1.13.x before 1.13.4 are impacted by this security flaw. Users of these versions are advised to update to the latest patched release.
Exploitation Mechanism
To exploit CVE-2021-28378, an attacker can craft specially designed issue data that, when viewed by a user with the affected Gitea versions, triggers the execution of malicious scripts.
Mitigation and Prevention
Protecting systems from CVE-2021-28378 requires immediate action and long-term security measures.
Immediate Steps to Take
Users are urged to update their Gitea installations to version 1.13.4 or later to mitigate the XSS vulnerability. Additionally, users should be cautious when interacting with untrusted issue data.
Long-Term Security Practices
Implementing secure coding practices, conducting regular security audits, and educating users on safe browsing habits can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly applying security patches and staying informed about software vulnerabilities are crucial steps in maintaining a secure software environment.