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Alerts This Week
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SUSE: 2021:1954-1 Critical: Docker Symlink Attack Fix Available

suse
Calendar Grey June 11, 2021
Scroller Suse
SUSE Security Patch resolves significant problems in containerd, docker, and runc, implementing solutions for multiple security flaws.
An update that solves four vulnerabilities and has 13 fixes is now available

Summary

This update for containerd, docker, runc fixes the following issues: Docker was updated to 20.10.6-ce (bsc#1184768, bsc#1182947, bsc#1181594) * Switch version to use -ce suffix rather than _ce to avoid confusing other tools (bsc#1182476). * CVE-2021-21284: Fixed a potential privilege escalation when the root user in the remapped namespace has access to the host filesystem (bsc#1181732) * CVE-2021-21285: Fixed an issue where pulling a malformed Docker image manifest crashes the dockerd daemon (bsc#1181730). * btrfs quotas being removed by Docker regularly (bsc#1183855, bsc#1175081) runc was updated to v1.0.0~rc93 (bsc#1182451, bsc#1175821 bsc#1184962). * Use the upstream runc package (bsc#1181641, bsc#1181677, bsc#1175821). * Fixed /dev/null is not available (bsc#1168481).

Topics%20covered

Topics Covered

security advisory symlink attack important docker SUSE Linux Enterprise runc containerd

References

#1168481 #1175081 #1175821 #1181594 #1181641

#1181677 #1181730 #1181732 #1181749 #1182451

#1182476 #1182947 #1183024 #1183855 #1184768

#1184962 #1185405

Cross- CVE-2021-21284 CVE-2021-21285 CVE-2021-21334

CVE-2021-30465

CVSS scores:

CVE-2021-21284 (NVD) : 6.8 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

CVE-2021-21284 (SUSE): 2.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

CVE-2021-21285 (NVD) : 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVE-2021-21285 (SUSE): 5 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

CVE-2021-21334 (NVD) : 6.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2021-21334 (SUSE): 6.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2021-30465 (NVD) : 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:1954-1
Rating: important

Topics%20covered

Topics Covered

security advisory symlink attack important docker SUSE Linux Enterprise runc containerd

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