Critical severity · published Nov 17, 2018
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…
9.8
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GV
Gvisor · Google
before 2018-11-01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19333
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-19333
Patch
https://github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca
Exploit
https://justi.cz/security/2018/11/14/gvisor-lpe.html
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