Vulnerability in Google Gvisor
CVE-2018-19333
pkg/sentry/kernel/shm/shm.go in Google gVisor before 2018-11-01 allows attackers to overwrite memory locations in processes running as root (but not escape the sandbox) via vectors involving IPC_RMID shmctl calls, because reference counting is mishandled.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
References
- justi.cz/security/2018/11/14/gvisor-lpe.html (Exploit, Third Party Advisory)
- github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19333?
- CVE-2018-19333 is a critical-severity vulnerability in Google Gvisor. CVSS score: 9.8/10. Published 2018-11-17.
- How severe is CVE-2018-19333?
- Critical severity. CVSS v3 base score is 9.8 out of 10.