CVE-2010-5334 in Mail Server
Summary
by MITRE
IceWarp Webclient before 10.2.1 has a directory traversal vulnerability. This can result in loss of confidential data of IceWarp Mailserver and the operating system. Input passed via a certain parameter (_c to basic/index.html) is not properly sanitised and can therefore be exploited to browse the partition where IceWarp is installed (or the whole system) and read arbitrary files.
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Analysis
by VulDB Data Team • 09/25/2020
The CVE-2010-5334 vulnerability represents a critical directory traversal flaw in IceWarp Webclient versions prior to 10.2.1, exposing organizations to significant data compromise risks. This vulnerability specifically affects the web-based interface of IceWarp Mailserver, a widely deployed email and collaboration platform used by enterprises and organizations worldwide. The flaw resides in how the application processes user input through the _c parameter within the basic/index.html endpoint, creating an exploitable condition that allows malicious actors to navigate beyond the intended application boundaries.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the IceWarp Webclient component. When a user submits data through the _c parameter, the application fails to properly sanitize or validate the input before processing it in file system operations. This inadequate validation creates a path traversal condition where attackers can manipulate the input to access files and directories outside the web root or application boundaries. The vulnerability enables arbitrary file reading capabilities that can extend to the entire operating system partition where IceWarp is installed, potentially exposing sensitive configuration files, user data, and system information.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to complete system compromise and unauthorized access to confidential information. Attackers exploiting this vulnerability can access email archives, user credentials, system configuration files, and potentially gain insights into the broader network infrastructure. The vulnerability's severity is amplified by its ability to traverse the entire file system, making it particularly dangerous for organizations that rely on IceWarp for email services and collaboration. This type of vulnerability directly aligns with CWE-22, which categorizes path traversal vulnerabilities as a critical weakness in input validation, and can be mapped to ATT&CK technique T1083 (File and Directory Discovery) and T1005 (Data from Local System).
Organizations affected by this vulnerability should immediately implement multiple layers of defense to protect their systems. The primary mitigation involves upgrading to IceWarp Webclient version 10.2.1 or later, which includes proper input validation and sanitization mechanisms. Additionally, network segmentation and access controls should be implemented to limit exposure of the vulnerable web interface to unauthorized users. Regular security audits and input validation testing should be conducted to identify similar vulnerabilities in other applications. System monitoring should be enhanced to detect unusual file access patterns that might indicate exploitation attempts, and proper logging should be maintained to track potential attacks. The vulnerability demonstrates the critical importance of input validation in web applications and serves as a reminder of the potential consequences when such security controls are inadequate.