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7.0

SmartOS Hyprlofs file system can let attackers gain higher privileges

CVE-2016-9033 · published 9 years ago
Summary

The Hyprlofs file system in SmartOS can be tricked into overflowing a memory buffer when it processes certain commands. This flaw could let a malicious user run code with more rights than they should have, potentially taking control of the system. Update SmartOS to the latest release or apply the vendor's patch to fix the problem.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
joyent smartos 20161110t013148z
cpe:2.3:o:joyent:smartos:20161110t013148z:*:*:*:*:*:*:*
Original advisory text
An exploitable buffer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when d...
An exploitable buffer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when dealing with native file systems. An attacker can craft an input that can cause a buffer overflow in the path variable leading to an out of bounds memory access and could result in potential privilege escalation. This vulnerability is distinct from CVE-2016-9035.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
7.0 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-120Classic Buffer Overflow
Timeline
Published14 Dec 2016
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2016-9033 · NVD
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