CVE-1999-0122: Buffer Overflow
Buffer overflow in AIX lchangelv gives root access.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
AIX lchangelvfrom your environment.If lchangelv is not required on the system, remove or uninstall the lchangelv binary to eliminate the vulnerable code path.
- Configuration
Restrict execution of the lchangelv binary so only trusted administrators (root) can run it. Change filesystem permissions to prevent non-privileged accounts from executing the binary until a vendor fix is applied.
AIX lchangelv executable permission = disable execution by non-administrative users - Compensating control
Limit access to systems that can execute lchangelv: restrict management/administrative access using firewall rules, network ACLs, or host-based controls so only trusted admin IPs or networks can reach those hosts.
- Operational
Assume a successful exploit could lead to full root compromise. If compromise is suspected, rebuild the affected system(s) from known-good media, rotate any credentials or keys that may have been exposed, and review system logs for signs of exploitation.
Event History
Frequently Asked Questions
What is the severity of CVE-1999-0122?
CVE-1999-0122 is classified as a critical vulnerability due to the buffer overflow allowing root access.
How do I fix CVE-1999-0122?
To fix CVE-1999-0122, it is recommended to apply the latest patches provided by IBM for AIX versions 4.1.x and 4.2.
What AIX versions are affected by CVE-1999-0122?
CVE-1999-0122 affects IBM AIX versions 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, and 4.2.
What are the potential impacts of exploiting CVE-1999-0122?
Exploitation of CVE-1999-0122 can lead to unauthorized root access, compromising the integrity and security of the system.
Is there a workaround for CVE-1999-0122?
While the most effective solution is to apply patches, restricting access to the affected lchangelv command can serve as a temporary workaround.