8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
58.4%
Severity: High
Date : 2021-05-25
CVE-ID : CVE-2021-30465
Package : runc
Type : sandbox escape
Remote : No
Link : https://security.archlinux.org/AVG-1972
The package runc before version 1.0.0rc95-1 is vulnerable to sandbox
escape.
Upgrade to 1.0.0rc95-1.
The problem has been fixed upstream in version 1.0.0rc95.
Container hardening mechanisms such as LSMs (AppArmor/SELinux) and user
namespaces can restrict the amount of damage an attacker could do but
they do not block this attack outright.
runc 1.0.0-rc94 and earlier are vulnerable to a symlink exchange attack
where an attacker with the ability to start containers using a custom
volume configuration can request a seemingly-innocuous container
configuration that results in the host filesystem being bind-mounted
into the container (allowing for a container escape).
An attacker can escape from a container and access arbitrary files on
the host system using a crafted container configuration.
https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r
https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f
https://security.archlinux.org/CVE-2021-30465
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
58.4%