Source: cve@mitre.org
Vulnerability in direct audio user space code on HP-UX 10.20 and 10.10 allows local users to cause a denial of service.
Local users on vulnerable HP-UX systems can trigger a denial-of-service (DoS) condition by exploiting a flaw in the direct audio user space code. This vulnerability allows attackers to disrupt system availability, potentially impacting critical services and operations. Successful exploitation requires local access to the compromised system.
Step 1: Local Access: An attacker gains local access to the HP-UX system. This could be through a compromised account, physical access, or another local vulnerability. Step 2: Exploit Trigger: The attacker executes a crafted program or command that interacts with the direct audio user space code. This could involve sending specially crafted audio data or manipulating audio device parameters. Step 3: Vulnerability Activation: The crafted input triggers the vulnerability within the audio code, leading to a system crash, resource exhaustion, or other DoS condition. Step 4: Denial of Service: The system becomes unavailable, preventing legitimate users from accessing services.
The vulnerability stems from a flaw in the direct audio user space code within HP-UX 10.10 and 10.20. The exact nature of the flaw is not explicitly detailed in the CVE description, but it results in a DoS. Based on the context of the time period, it is highly probable that the vulnerability involves a memory corruption issue, such as a buffer overflow or an unhandled exception within the audio processing routines. The user space code likely interacts with kernel-level audio drivers, and the flaw could be triggered by sending malformed audio data or by manipulating audio device control parameters. Without more specific information, it is difficult to pinpoint the exact function or logic flaw, but the result is a system crash or resource exhaustion.
While no specific APTs or malware are directly linked to this CVE, the vulnerability's potential for DoS makes it attractive for attackers seeking to disrupt operations. This vulnerability is not listed on the CISA KEV.
Monitor system logs for unexpected crashes or errors related to audio services.
Analyze core dumps or crash reports for evidence of memory corruption or other anomalies within the audio code.
Review network traffic for unusual audio-related activity, although this is less likely to be directly relevant to a local DoS.
Implement file integrity monitoring to detect changes to audio-related binaries or configuration files.
Upgrade to a patched version of HP-UX if available. Given the age of the system, this may not be possible.
Isolate affected systems from critical network segments to limit the impact of a potential DoS.
Implement strict access controls to prevent unauthorized local access.
Regularly audit system logs for suspicious activity.
Consider replacing the affected system with a more modern and secure operating system if feasible.
Disable or restrict the use of audio services if they are not essential for system operation.