Local File Inclusion Vulnerability in phpLDAPadmin - Denial of Service Risk
Summary
DEBIAN-CVE-2011-4082: A local file inclusion flaw was found in the way the phpLDAPadmin before 0.9.8 processed certain values of the "Accept-Language" HTTP header. Affects phpldapadmin versions < 0.9.8-1. Fixed in 0.9.8-1. How to fix ↓
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Background
phpLDAPadmin is a web-based application designed for managing LDAP directories. It provides a user-friendly interface for administrators to interact with LDAP servers, allowing for easy management of users, groups, and other directory entries. This application is widely used due to its simplicity and effectiveness in handling LDAP operations. However, certain versions of phpLDAPadmin are vulnerable to a local file inclusion flaw that can be exploited by attackers.
Vulnerability Detail
A local file inclusion flaw was found in phpLDAPadmin versions prior to 0.9.8, specifically in the way it processed certain values of the 'Accept-Language' HTTP header. This vulnerability allows a remote attacker to craft a specially-designed request that could lead to a denial of service, potentially disrupting the availability of the application. The flaw arises from insufficient validation of user input, which can be exploited to include unintended files.
How To Fix
Minimum fixed version
0.9.8-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade phpldapadminTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider restricting access to the phpLDAPadmin interface to trusted IP addresses only, thereby minimizing the risk of exploitation. Additionally, implementing web application firewalls (WAF) can help filter out malicious requests.
Conclusion
The local file inclusion vulnerability in phpLDAPadmin poses a significant risk, particularly in versions prior to 0.9.8. It is crucial for users to update their installations to the latest version to protect against potential denial of service attacks. Implementing workarounds can provide temporary relief, but updating is the most effective solution.
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FAQ
The vulnerability can lead to a denial of service, making the phpLDAPadmin application unavailable to legitimate users.
You can check your version of phpLDAPadmin by running 'phpLDAPadmin -v' in your terminal or by looking at the version information in the application interface.
Yes, you can use Vulert to monitor and alert in real-time for open-source vulnerabilities in your software. It requires only a manifest file like package-lock.json.
Implement access restrictions and consider using a web application firewall as a temporary measure to mitigate the risk.
Detailed information can be found in the Debian CVE database and other security advisories related to phpLDAPadmin.
References
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