CVE-1999-0030: SGI IRIX root privilege escalation via buffer overflow in xlock

CVE-1999-0030 · Severity: high · CVSS 7.2 · Published 1997-07-16

A security vulnerability exists in the xlock utility on SGI IRIX operating systems, which is used to lock a user's display. A local user can exploit this flaw to bypass security restrictions and gain full administrative (root) control over the system. This could lead to a complete compromise of the machine, including unauthorized access to all data and system settings.

Technologies: Sgi Irix. Vendors: Sgi.

Quick answers

Is CVE-1999-0030 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-1999-0030 being exploited in the wild.
How severe is CVE-1999-0030?
High severity, with a CVSS score of 7.2, published 16 July 1997.
Which products and versions are affected?
SGI IRIX.
Is there a fix for CVE-1999-0030?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-1999-0030 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-1999-0030?
Check whether you run Sgi Irix. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The xlock utility in SGI IRIX contains a buffer overflow vulnerability. By providing specially crafted input to the command, a local attacker can overflow a buffer and execute arbitrary code with elevated privileges. Because xlock is typically installed with setuid root permissions to manage screen locking and authentication, successful exploitation allows a non-privileged local user to gain full root access to the operating system. The vulnerability is triggered locally and does not require prior administrative authentication.

Affected products

  • SGI IRIX

Timeline

  • 1997-07-16: disclosed

References

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