CVE-2021-43395
MEDIUM severity · CVSS 5.5 · CWE-667
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90 ↗
Additional information
- NVD record
- https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90Patch
- https://www.illumos.org/issues/14424Patch
- https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424Advisory
- http://www.tribblix.org/relnotes.htmlAdvisory
- https://jgardner100.wordpress.com/2022/01/20/security-heads-up/Advisory
- https://kebe.com/blog/?p=505Advisory
- https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.cAdvisory
- https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.cAdvisory