CVE-2017-11107 Scanner

phpLDAPadmin is widely used in IT and network management environments to manage and browse LDAP directories. System administrators and network engineers utilize it for efficient directory handling, serving a critical role in managing network resources and organizational data. The software provides a web-based interface, which can be accessed from various devices, making management tasks scalable and flexible. Organizations rely on it to streamline LDAP directory operations, especially when dealing with large-scale directories with numerous entries. Its integration into diverse IT architectures makes it a cornerstone tool for directory management. The tool supports multiple LDAP server types, which broadens its applicability across different industry sectors.

Cross-Site Scripting (XSS) is a common security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. When exploited, it can lead to unauthorized actions like session hijacking, defacement, or data theft. The vulnerability typically stems from improper input validation and can be triggered by crafting malicious URLs. XSS can impact user experience significantly and may lead to users losing trust in a web application. Exploiting this vulnerability does not require authenticated access in many cases, making it a dangerous threat. Defending against XSS involves robust input validation and output encoding practices.

This vulnerability in phpLDAPadmin occurs due to unsanitized input parameters in the entry_chooser.php file. Attackers can inject scripts through parameters such as form, element, RDN, or container, which are not properly validated. When a victim loads a crafted URL, the script is executed in their browser context. The attack bypasses standard validation mechanisms, taking advantage of the web application's trust in user input. Successful exploitation leads to the execution of arbitrary scripts, which could be used for various malicious activities. It requires the attacker to trick the victim into clicking or loading a specially crafted link.

If exploited, this vulnerability could lead to serious consequences such as session hijacking, where attackers gain unauthorized access to user accounts. It may also result in website defacement, impacting the organization's credibility and user trust. These effects can lead to sensitive data exposure as malicious scripts can capture user credentials and other sensitive information. Additionally, exploiting this vulnerability contributes to a larger attack surface for further exploitation and malware delivery. The potential free reign over user sessions makes XSS a critical security issue that needs urgent attention.

REFERENCES

• https://nvd.nist.gov/vuln/detail/CVE-2017-11107
• https://github.com/leenooks/phpLDAPadmin/issues/50
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=867719