CVE-2021-3342 : Vulnerability Insights and Analysis

EPrints 3.4.2 allows remote attackers to read arbitrary files and possibly execute commands via crafted LaTeX input to a cgi/latex2png?latex= URI.

Understanding CVE-2021-3342

This CVE-2021-3342 vulnerability impacts EPrints version 3.4.2, allowing attackers to exploit it through specially designed LaTeX input.

What is CVE-2021-3342?

CVE-2021-3342 is a security flaw in EPrints 3.4.2 that enables malicious actors to gain unauthorized access to sensitive files and potentially run commands by manipulating LaTeX input.

The Impact of CVE-2021-3342

This vulnerability poses a serious threat as it can lead to unauthorized disclosure of information and unauthorized execution of commands on systems running the affected EPrints version.

Technical Details of CVE-2021-3342

EPrints 3.4.2 is susceptible to remote file reading and command execution due to improper input validation when processing LaTeX requests.

Vulnerability Description

The vulnerability in EPrints 3.4.2 arises from the mishandling of user-supplied LaTeX input, which can be exploited by attackers to retrieve arbitrary files and potentially execute commands.

Affected Systems and Versions

Only EPrints version 3.4.2 is affected by this security issue.

Exploitation Mechanism

Attackers can exploit CVE-2021-3342 by sending specially crafted LaTeX input to the cgi/latex2png?latex= URI, triggering the execution of unauthorized commands.

Mitigation and Prevention

To protect systems from CVE-2021-3342, immediate action is required to mitigate the risk and prevent potential exploitation.

Immediate Steps to Take

Update EPrints to a non-vulnerable version or apply patches provided by the vendor.
Restrict access to the cgi/latex2png endpoint to trusted sources only.

Long-Term Security Practices

Regularly update and patch EPrints installations to address known vulnerabilities.
Implement proper input validation mechanisms to prevent similar exploitation in the future.

Patching and Updates

Ensure timely application of security patches released by EPrints to address CVE-2021-3342 and other vulnerabilities.