CVE-2021-43784

runc: The runC tool is a lightweight, portable implementation of the Open Container Format (OCF) that provides container ru...

CVE-2021-43784 is fixed in runc on 1 platform, first by DEBIAN-CVE-2021-43784, released December 6, 2021. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.0
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0180
78th percentile

The runC tool is a lightweight, portable implementation of the Open Container Format (OCF) that provides container runtime. Security Fix(es): * golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724) * runc: Rootless runc makes `/sys/fs/cgroup` writable (CVE-2023-25809) * runc: volume mount race condition (regression of CVE-2019-19921) (CVE-2023-27561) * runc: AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration (CVE-2023-28642) * runc: integer overflow in netlink bytemsg length field allows attacker to override netlink-based container configuration (CVE-2021-43784) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.3 Release Notes linked from the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
runc · Debian 12.15 (bookworm) 1.0.3+ds1-1 DEBIAN-CVE-2021-43784 Dec 6, 2021
runc · Debian 13.5 (trixie) 1.0.3+ds1-1 DEBIAN-CVE-2021-43784 Dec 6, 2021
runc · Debian 14 1.0.3+ds1-1 DEBIAN-CVE-2021-43784 Dec 6, 2021
runc · RHEL 9 4:1.1.9-1.el9 RHSA-2023:6380 Nov 7, 2023
runc · almalinux 9 4:1.1.9-1.el9 ALSA-2023:6380 Nov 7, 2023
runc · ol 9 4:1.1.9-1.el9 ELSA-2023-6380 Nov 11, 2023

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