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OpenAdvisories
High ELSA-2015-3037 3 CVEs

Important: docker security update (Oracle Linux 7)

Published May 20, 2015 · Updated May 20, 2015

Summary

[1.6.1-1.0.1]
- Update source to 1.6.1 from https://github.com/docker/docker/releases/tag/v1.6.1
Symlink traversal on container respawn allows local privilege escalation (CVE-2015-3629)
Insecure opening of file-descriptor 1 leading to privilege escalation (CVE-2015-3627)
Read/write proc paths allow host modification & information disclosure (CVE-2015-3630)
Volume mounts allow LSM profile escalation (CVE-2015-3631)
AppArmor policy improvements

Fixed packages 6

ReleasePackageFixed in
Oracle Linux · 7 docker 0:1.6.1-1.0.1.el7
Oracle Linux · 7 docker-devel 0:1.6.1-1.0.1.el7
Oracle Linux · 7 docker-logrotate 0:1.6.1-1.0.1.el7
Oracle Linux · 7 docker-pkg-devel 0:1.6.1-1.0.1.el7
Oracle Linux · 7 docker-vim 0:1.6.1-1.0.1.el7
Oracle Linux · 7 docker-zsh-completion 0:1.6.1-1.0.1.el7

Vulnerabilities 3

  • High 8.4

    Arbitrary File Write in Libcontainer

    Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.

  • High 8.4

    Information Exposure in Docker Engine

    Docker Engine before 1.6.1 uses weak permissions for (1) /proc/asound, (2) /proc/timer_stats, (3) /proc/latency_stats, and (4) /proc/fs, which allows local users to modify the host, obtain sensitive information, and perform protocol downgrade attacks via a cr…

  • Medium —

    Symlink Attack in Libcontainer and Docker Engine

    Libcontainer and Docker Engine before 1.6.1 opens the file-descriptor passed to the pid-1 process before performing the chroot, which allows local users to gain privileges via a symlink attack in an image.