Timing Attack Vulnerability in Mojolicious Module (CVE-2020-36829)
Summary
CVE-2020-36829: The Mojolicious module before 8.65 for Perl is vulnerable to secure_compare timing attacks that allow an attacker to guess the length of a secret string. Affects libmojolicious-perl across 2 version ranges.
< 8.65+dfsg-1
< 1308d0a66a7aadeafeaec0a87627de8ad1e367e7
Fixed in 8.65+dfsg-1. How to fix ↓
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Background
The Mojolicious module is a popular web framework for Perl, designed to simplify the development of web applications. It provides features such as routing, templating, and real-time communication. However, prior to version 8.65, it was found to be vulnerable to timing attacks, which could allow attackers to infer the length of secret strings used within the application, potentially compromising sensitive data.
Vulnerability Detail
CVE-2020-36829 is a vulnerability in the Mojolicious module for Perl that allows attackers to exploit timing discrepancies in secure comparisons. This vulnerability arises from the way the module handles secret strings, making it possible for an attacker to guess the length of these strings through careful timing analysis. If exploited, this could lead to unauthorized access to sensitive information, thereby posing a significant security risk to applications relying on this module.
How To Fix
Minimum fixed version
8.65+dfsg-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libmojolicious-perlTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider implementing additional security measures such as rate limiting on sensitive endpoints or using alternative libraries that do not exhibit this vulnerability until an update can be applied.
Conclusion
The CVE-2020-36829 vulnerability in the Mojolicious Perl module poses a significant risk due to its potential for timing attacks. It is crucial for developers using this module to update to version 8.65 or later to safeguard their applications against unauthorized access and data breaches.
See every vulnerability recorded for libmojolicious-perl →
FAQ
CVE-2020-36829 is a vulnerability in the Mojolicious Perl module that allows attackers to exploit timing attacks to guess the length of secret strings.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which analyzes your manifest file for vulnerabilities.
Exploitation of this vulnerability could lead to unauthorized access to sensitive information, compromising the security of the application.
Yes, implementing rate limiting and additional security measures can help mitigate the risk until an update is applied.
Versions of the Mojolicious module prior to 8.65 are affected by this vulnerability.
Related vulnerabilities
Recent vulnerabilities recorded for libmojolicious-perl.
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