CVE-2018-19333 : pkg/sentry/kernel/shm/shm.go in Google gVisor before 2018-11-01 allows attackers

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 2018-11-17 17:29:00

Updated 2020-08-24 17:37:01

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2018-19333

Google » Gvisor
Versions before (<) 2018-11-01
cpe:2.3:a:google:gvisor:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2018-19333

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 72 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-19333

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

References for CVE-2018-19333

https://justi.cz/security/2018/11/14/gvisor-lpe.html

Privilege Escalation in gVisor, Google's Container Sandbox
Exploit;Third Party Advisory
https://github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca

Prevent premature destruction of shm segments. · google/gvisor@0e277a3 · GitHub
Patch;Third Party Advisory

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Vulnerability Details : CVE-2018-19333

Products affected by CVE-2018-19333

Exploit prediction scoring system (EPSS) score for CVE-2018-19333

CVSS scores for CVE-2018-19333

References for CVE-2018-19333