Description

Improper neutralization of special elements used in an OS command ('OS command injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute pardus-update allows OS Command Injection. This issue affects pardus-update: from 0.6.6 before 0.7.0.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.8",
  "pubDate": "2026-07-23T09:16:26.570Z",
  "pubdate": "2026-07-23T09:16:26.570Z",
  "executiveSummary": "An improper neutralization of special elements used in an OS command vulnerability, classified as OS command injection, exists in the TUBITAK BILGEM Software Technologies Research Institute pardus-update utility. This security flaw allows malicious actors to execute arbitrary operating system commands with the privileges of the running application.\nThe vulnerability specifically impacts the pardus-update product, affecting versions ranging from 0.6.6 up to, but not including, version 0.7.0.\nThe risk implications are severe, as successful exploitation could lead to full system compromise, unauthorized data access, modification of system configurations, or denial of service depending on the execution context of the vulnerable component.\nThe attacker capabilities include the execution of arbitrary system-level instructions by supplying maliciously crafted inputs that are improperly handled and subsequently passed directly to an underlying operating system shell or command interpreter.\nExploitation requirements depend on the exposure vector of the pardus-update utility, typically requiring an interface or input parameter that processes untrusted data without adequate sanitization or safe API usage.",
  "technicalDetails": "The root cause of the vulnerability stems from insufficient input validation and improper sanitization of special characters within the pardus-update software. When the application constructs operating system commands dynamically by concatenating untrusted input strings without escaping shell metacharacters, an attacker can inject arbitrary shell commands.\nThe vulnerable component is the pardus-update package, specifically within versions from 0.6.6 before 0.7.0, where system execution functions handle external parameters unsafely.\nThe attack flow begins when an attacker identifies an input vector processed by the pardus-update utility. The attacker crafts a malicious payload containing OS command separators or chaining operators (such as semicolons, ampersands, or pipe symbols) followed by arbitrary commands. When the vulnerable component evaluates this input, the operating system interpreter executes both the intended internal command and the attacker-supplied payload.\nAuthentication requirements, privilege requirements, and network exposure are contingent upon how pardus-update exposes its functionality to users or other local/remote processes. If the utility processes input derived from unauthenticated network requests or low-privileged local users, the boundary of exposure widens accordingly.\nThe payload behavior involves the immediate execution of injected OS instructions within the security context of the process running pardus-update. Post-exploitation impact includes unauthorized privilege escalation, lateral movement within the host, data exfiltration, or complete system takeover."
}