Memory Overwrite Vulnerability in Google gVisor Kernel
CVE-2018-19333

9.8CRITICAL

Key Information:

Vendor
Google
Status
Gvisor
Vendor
CVE Published:
17 November 2018

Summary

A vulnerability in the gVisor kernel component allows attackers with access to local memory to overwrite critical memory locations in processes running with root privileges. This flaw arises from improper handling of reference counting during IPC_RMID shmctl calls. Although the vulnerability does not facilitate escaping the sandbox environment, it poses a significant risk by enabling unauthorized memory manipulation, potentially compromising system integrity and reliability.

References

https://justi.cz/security/2018/11/14/gvisor-lpe.html
x_refsource_MISC
https://github.com/google/gvisor/commit/0e277a39c8b6f905e...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.