Vulnerability identifier: #VU25847
Vulnerability risk: Low
CVSSv3.1: 6 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
runc
Client/Desktop applications /
Other client software
Vendor: Open Container Initiative
Description
The vulnerability allows a local user to gain unauthorized access to sensitive information.
The vulnerability exists due to improper access restrictions, related to libcontainer/rootfs_linux.go in runc. A local user with ability to spawn two containers with custom volume-mount configurations, and run custom images can escalate privileges on the system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
runc: 1.0.0 rc1 - 1.0.0 rc9
External links
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00018.html
http://github.com/opencontainers/runc/issues/2197
http://github.com/opencontainers/runc/pull/2190
http://github.com/opencontainers/runc/releases
http://security-tracker.debian.org/tracker/CVE-2019-19921
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.