CVE-2024-48991

https://nvd.nist.gov/vuln/detail/CVE-2024-48991

T1059.006 – Python
T1053.002 – At

1. Technical Attack Analysis:
CVE-2024-48991 pertains to a critical vulnerability in the `needrestart` tool, allowing local attackers to exploit a race condition to execute arbitrary code with root privileges. The vulnerability is particularly concerning because it facilitates the execution of unauthorized commands under the security context of the root user, significantly escalating the attacker’s privileges.

Attack Techniques:
– T1059.006 – Python : This technique indicates that the attacker can leverage Python scripting to execute malicious code once they have tricked `needrestart` into using their own Python interpreter. Given Python’s versatility and prevalence, an attacker can craft a wide array of payloads that can perform various malicious actions, from data exfiltration to system manipulation.

– T1053.002 – At : This technique involves utilizing scheduled tasks or cron jobs to execute the arbitrary code at specific times or under particular conditions. If an attacker gains the ability to run arbitrary code, they can create persistent backdoors or automate further malicious activities, thereby ensuring continued access and control over the compromised system.

Potential Impacts:
– Privilege Escalation : Local attackers can gain root access, allowing them to manipulate system files, install malware, or create user accounts for future access.
– Data Compromise : Sensitive information can be accessed and exfiltrated, leading to data breaches.
– System Integrity Violation : The attacker can alter system configurations or introduce malicious software, undermining the integrity of the system.
– Service Disruption : Malicious scripts could lead to denial-of-service conditions or system instability, affecting availability.

2. Mitigation Measures:
To mitigate the potential impacts of CVE-2024-48991, organizations should consider the following actions:

– Strengthen Security Configurations :
– Ensure `needrestart` is updated to version 3.8 or later to eliminate the vulnerability.
– Implement multi-factor authentication (MFA) for all critical systems to reduce the risk of unauthorized access.
– Restrict user permissions to the principle of least privilege, ensuring that users only have the access necessary for their roles.

– Utilize Specific Tools or Security Software :
– Deploy intrusion detection systems (IDS) to monitor for unusual command executions or changes in system behavior.
– Utilize antivirus and anti-malware solutions to detect and block known malicious scripts and payloads.

– Implement Monitoring and Reporting Practices :
– Enable detailed logging of system events, specifically focusing on executions of `needrestart` and Python scripts.
– Set up alerts for any suspicious activity, such as unauthorized attempts to execute commands with elevated privileges or any modifications to the Python interpreter.
– Regularly review logs for anomalies that may indicate exploitation attempts or unauthorized access.

By implementing these measures, organizations can significantly reduce the risk associated with CVE-2024-48991 and bolster their overall security posture against similar vulnerabilities.

The content above is generated by AI. Please review and consider carefully before applying!

https://github.com/liske/needrestart/commit/42af5d328901287a4f79d1f5861ac827a53fd56d
https://github.com/liske/needrestart/commit/6ce6136cccc307c6b8a0f8cae12f9a22ac2aad59
https://www.cve.org/CVERecord?id=CVE-2024-48991
https://www.qualys.com/2024/11/19/needrestart/needrestart.txt