Description

Improper neutralization of special elements used in an OS command ('OS command injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Software allows OS Command Injection. This issue affects Pardus Software: before 1.0.5.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.4",
  "pubDate": "2026-09-11T16:17:47.490Z",
  "pubdate": "2026-09-11T16:17:47.490Z",
  "executiveSummary": "Pardus Software versions prior to 1.0.5 are susceptible to an OS command injection vulnerability categorized under CWE-78: Improper Neutralization of Special Elements used in an OS Command. This critical security flaw arises from the improper sanitization of user-supplied input before it is processed by the underlying operating system shell.\nSuccessful exploitation allows an unauthenticated or authenticated attacker, depending on the implementation context, to execute arbitrary shell commands with the privileges of the Pardus Software process. This facilitates full system compromise, unauthorized data access, and potential lateral movement within the host environment. The impact is severe, as it enables the execution of malicious payloads, modification of sensitive system files, and complete control over the affected service instance.\nRemediation requires upgrading the Pardus Software suite to version 1.0.5 or later, which addresses the improper input handling mechanism. Organizations utilizing earlier versions are at significant risk of remote or local code execution and should prioritize patching or restricting access to the vulnerable application components.",
  "technicalDetails": "The vulnerability originates from the application's failure to adequately validate or escape input parameters before passing them to system-level APIs or shell execution functions (such as system(), exec(), or popen() in C/C++, or equivalent wrappers in higher-level languages). Because the application treats external, untrusted input as a trusted component of an OS command string, an attacker can inject shell metacharacters—such as semicolons (;), pipes (|), ampersands (&), or backticks (`)—to terminate the intended command and append arbitrary instructions.\nThe attack flow begins when an attacker identifies an application entry point, such as a web form, API endpoint, or configuration parameter, that interacts with the OS. By injecting crafted shell operators and malicious commands, the attacker manipulates the execution flow of the application process. For example, if the application executes 'ping [user_input]', providing an input of '127.0.0.1; cat /etc/shadow' would result in the application executing the legitimate ping command followed by an unauthorized retrieval of sensitive password files.\nThe vulnerable component involves the logic responsible for invoking system subprocesses. Without strict allow-listing or the use of parameterized execution APIs that separate command arguments from the executable path, the shell interprets the injected characters as command delimiters. This allows the attacker to execute shell commands with the identity, permissions, and environment variables of the Pardus Software process. If the service runs with root or elevated privileges, the attacker gains equivalent system-level control.\nThis issue is specific to versions of Pardus Software prior to 1.0.5. The lack of robust input neutralization constitutes the primary root cause, as the application assumes input adheres to expected formats without performing cryptographic or structural validation. Post-exploitation, an attacker could establish persistent backdoors, install rootkits, or deploy ransomware. Because the vulnerability exists within the application's interface with the OS, the exposure is determined by the network or local reachability of the affected software component. Exploitation does not typically require complex memory corruption techniques, as it relies on the logical misuse of the shell's command-line parsing capabilities."
}