Bugzilla – Bug 1183397
VUL-0: CVE-2021-21334: containerd: potential information leak through environment variables
Last modified: 2024-05-23 07:02:49 UTC
CVE-2021-21334 In containerd (an industry-standard container runtime) before versions 1.3.10 and 1.4.4, containers launched through containerd's CRI implementation (through Kubernetes, crictl, or any other pod/container client that uses the containerd CRI service) that share the same image may receive incorrect environment variables, including values that are defined for other containers. If the affected containers have different security contexts, this may allow sensitive information to be unintentionally shared. If you are not using containerd's CRI implementation (through one of the mechanisms described above), you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image which have different environment variables, you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image in rapid succession, you have reduced likelihood of being vulnerable to this issue This vulnerability has been fixed in containerd 1.3.10 and containerd 1.4.4. Users should update to these versions. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-21334 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21334 https://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e https://github.com/containerd/containerd/releases/tag/v1.3.10 https://github.com/containerd/containerd/releases/tag/v1.4.4 https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4
tracking as affected: - SUSE:SLE-12:Update/containerd - SUSE:SLE-15:Update/containerd - openSUSE:Factory/containerd
SUSE-SU-2021:1458-1: An update that solves 9 vulnerabilities and has 23 fixes is now available. Category: security (important) Bug References: 1028638,1034053,1048046,1051429,1053532,1095817,1118897,1118898,1118899,1121967,1131314,1131553,1149954,1152308,1160452,1168481,1175081,1175821,1181594,1181641,1181677,1181730,1181732,1181749,1182451,1182476,1182947,1183024,1183397,1183855,1184768,1184962 CVE References: CVE-2018-16873,CVE-2018-16874,CVE-2018-16875,CVE-2019-16884,CVE-2019-19921,CVE-2019-5736,CVE-2021-21284,CVE-2021-21285,CVE-2021-21334 JIRA References: Sources used: SUSE Linux Enterprise Module for Containers 12 (src): containerd-1.4.4-16.38.1, docker-20.10.6_ce-98.66.1, runc-1.0.0~rc93-16.8.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Fixed in 2021.