Qualys discovered that needrestart, before version 3.8, allows local attackers to execute arbitrary code as root by tricking needrestart into running the Python interpreter with an attacker-controlled PYTHONPATH environment variable. This vulnerability, classified as high severity with a CVSS score of 7.8, poses significant risks to organizations that utilize this software.
Risk to organizations includes unauthorized access and control over affected systems, leading to potential data breaches or further exploits. Given the exploitation status, organizations should prioritize patching immediately.
As of now, known exploits exist for this vulnerability, increasing the urgency for defensive measures. Organizations are advised to assess their environments for affected versions of needrestart and take necessary actions.
To mitigate the risks associated with CVE-2024-48990, immediate action is required to apply available patches or workarounds.
Vulnerability Details
The vulnerability allows local attackers to execute arbitrary code as root due to improper handling of the PYTHONPATH environment variable by needrestart versions prior to 3.8. This flaw falls under the CWE-427 category, indicating a vulnerability related to untrusted search path issues.
The CVSS score for this vulnerability is 7.8, indicating high severity. The attack vector is local, requiring low complexity with low privileges and no user interaction. The impacts on confidentiality, integrity, and availability are all rated as high.
Technical Analysis
The root cause of this vulnerability is the improper handling of the PYTHONPATH environment variable, which allows attackers to craft a malicious environment that can lead to arbitrary code execution when the needrestart application is executed. The attack vector is local, meaning an attacker must have access to the system to exploit this vulnerability.
The attack complexity is low, as the attacker must only manipulate the environment variable without requiring elevated privileges or user interaction. The implications of this vulnerability are severe, as attackers may leverage it to gain full control of the compromised system.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant, as it allows unauthorized users to execute arbitrary code with root privileges. This exposure can lead to data breaches, unauthorized access to sensitive information, and the potential for further exploits within the network.
Organizations should evaluate the blast radius of this vulnerability, especially in environments where needrestart is deployed on critical systems. The urgency of addressing this vulnerability is underscored by its high CVSS score and the existence of known exploits.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch (version 3.8) are affected by this vulnerability in the needrestart component.
Mitigation & Remediation
Organizations should prioritize applying the patch released for needrestart to mitigate this vulnerability. The patch can be found in the official repository. In addition to patching, organizations should consider restricting access to the affected systems and monitoring for unusual behavior relating to the needrestart component.
For more information on continuous security testing, organizations can explore our continuous penetration testing services.
Detection Guidance
Organizations should monitor logs for any indicators of unauthorized access or unusual activity related to needrestart. Behavioral anomalies that indicate exploitation attempts should be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-48990 highlights the importance of secure coding practices and environment variable management. This vulnerability represents a pattern of common misconfigurations that can lead to serious security risks.
Security teams should learn from such vulnerabilities to enhance their application security posture. Regular audits and penetration testing can help identify similar weaknesses before they are exploited.
For further reading on vulnerability management, organizations can refer to our blog on vulnerability management programs and the importance of continuous testing.
Additionally, organizations can benefit from reviewing our penetration testing methodology to understand best practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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