Use After Free in Joyent Smartos
CVE-2018-1166
This vulnerability allows local attackers to escalate privileges on vulnerable installations of Joyent SmartOS release-20170803-20170803T064301Z. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the SMBIOC_TREE_RELE ioctl. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under the context of the host OS. Was ZDI-CAN-4984.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Joyent Smartos — versions release-20170803-20170803T064301Z
- Joyent Smartos — versions 20170803
Weakness classification (CWE)
References
- help.joyent.com/hc/en-us/articles/360000124928 (Vendor Advisory)
- zerodayinitiative.com/advisories/ZDI-18-159 (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1166?
- CVE-2018-1166 is a high-severity vulnerability in Joyent Smartos, classified under Use After Free. CVSS score: 7.8/10. Published 2018-02-21.
- How severe is CVE-2018-1166?
- High severity. CVSS v3 base score is 7.8 out of 10.