Vulnerability in Illumos
CVE-2021-43395
An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Illumos
- Joyent Smartos — versions 20210923
- Omniosce Omnios — versions r151038
- Openindiana — versions hipster_2021.04
- Oracle Solaris — versions 10, 11
Weakness classification (CWE)
References
- github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/u… (Exploit, Third Party Advisory)
- github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/u… (Exploit, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2022.html (Patch, Third Party Advisory)
- www.tribblix.org/relnotes.html (Third Party Advisory, Release Notes)
- jgardner100.wordpress.com/2022/01/20/security-heads-up/ (Third Party Advisory)
- illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illum… (Vendor Advisory)
- www.illumos.org/issues/14424 (Patch, Issue Tracking, Vendor Advisory)
- github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90 (Patch, Third Party Advisory)
- kebe.com/blog/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43395?
- CVE-2021-43395 is a medium-severity vulnerability in Illumos, classified under Improper Locking. CVSS score: 5.5/10. Published 2022-12-26.
- How severe is CVE-2021-43395?
- Medium severity. CVSS v3 base score is 5.5 out of 10.