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.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03545-1 advisory.

    Note this update contains a already fixed references mostly.

    - Remove git-core recommends on SLE to avoid pulling it in unnecessary. (bsc#1250508)

      This feature is mostly intended for developers ('docker build git://') so       most users already have the dependency installed, and the error when git is       missing is fairly straightforward (so they can easily figure out what they       need to install).

    - Include historical changelog data from before the docker-stable fork. The       initial changelog entry did technically provide all the necessary       information, but our CVE tracking tools do not understand how the package is       forked and so it seems that this package does not include fixes for ~12 years       of updates. So, include a copy of the original package's changelog up until       the fork point. bsc#1250596

    - Update to docker-buildx v0.25.0. Upstream changelog:
      <https://github.com/docker/buildx/releases/tag/v0.25.0>

    - Update to Go 1.23 for building now that upstream has switched their 23.0.x       LTSS to use Go 1.23.

    - Do not try to inject SUSEConnect secrets when in Rootless Docker mode, as       Docker does not have permission to access the host zypper credentials in this       mode (and unprivileged users cannot disable the feature using       /etc/docker/suse-secrets-enable.) bsc#1240150

    - Initial docker-stable fork, forked from Docker 24.0.7-ce release       (packaged on 2024-02-14). The original changelog is included below for       historical reference.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03540-1 advisory.

    - Include historical changelog data from before the docker-stable fork. The       initial changelog entry did technically provide all the necessary       information, but our CVE tracking tools do not understand how the package is       forked and so it seems that this package does not include fixes for ~12 years       of updates. So, include a copy of the original package's changelog up until       the fork point. (bsc#1250596)

    - Remove git-core recommends on SLE. Most SLE systems have       installRecommends=yes by default and thus end up installing git with Docker.
      bsc#1250508

      This feature is mostly intended for developers ('docker build git://') so       most users already have the dependency installed, and the error when git is       missing is fairly straightforward (so they can easily figure out what they       need to install).

    - Backport <https://github.com/moby/moby/pull/48517>. bsc#1247362

    - Update to docker-buildx v0.25.0. Upstream changelog:
      <https://github.com/docker/buildx/releases/tag/v0.25.0>

    - Do not try to inject SUSEConnect secrets when in Rootless Docker mode, as       Docker does not have permission to access the host zypper credentials in this       mode (and unprivileged users cannot disable the feature using       /etc/docker/suse-secrets-enable.) bsc#1240150

    - Initial docker-stable fork, forked from Docker 24.0.7-ce release       (packaged on 2024-02-14). The original changelog is included below for       historical reference.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux container runtime environment Docker was updated to version 1.6.2 to fix several security and non-security issues.

  - Security :

  - Fix read/write /proc paths. (CVE-2015-3630)

  - Prohibit VOLUME /proc and VOLUME /. (CVE-2015-3631)

  - Fix opening of file-descriptor 1. (CVE-2015-3627)

  - Fix symlink traversal on container respawn allowing     local privilege escalation. (CVE-2015-3629)

  - Runtime :

  - Update Apparmor policy to not allow mounts.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-3037 advisory.

    [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

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

docker was updated to version 1.6.1 to fix several security and non-security issues. 

  - Updated to version 1.6.1 (2015-05-07) [bnc#930235]

  - Security

  - Fix read/write /proc paths (CVE-2015-3630)

  - Prohibit VOLUME /proc and VOLUME / (CVE-2015-3631)

  - Fix opening of file-descriptor 1 (CVE-2015-3627)

  - Fix symlink traversal on container respawn allowing     local privilege escalation (CVE-2015-3629)

  - Prohibit mount of /sys

  - Runtime

  - Update Apparmor policy to not allow mounts

  - Updated libcontainer-apparmor-fixes.patch: adapt patch     to reflect changes introduced by docker 1.6.1

The file-descriptor passed by libcontainer to the pid-1 process of a container has been found to be opened prior to performing the chroot, allowing insecure open and symlink traversal. This allows malicious container images to trigger a local privilege escalation.
(CVE-2015-3627)

Libcontainer version 1.6.0 introduced changes which facilitated a mount namespace breakout upon respawn of a container. This allowed malicious images to write files to the host system and escape containerization. (CVE-2015-3629)

Several paths underneath /proc were writable from containers, allowing global system manipulation and configuration. These paths included /proc/asound, /proc/timer_stats, /proc/latency_stats, and /proc/fs. By allowing writes to /proc/fs, it has been noted that CIFS volumes could be forced into a protocol downgrade attack by a root user operating inside of a container. Machines having loaded the timer_stats module were vulnerable to having this mechanism enabled and consumed by a container. (CVE-2015-3630)

By allowing volumes to override files of /proc within a mount namespace, a user could specify arbitrary policies for Linux Security Modules, including setting an unconfined policy underneath AppArmor, or a docker_t policy for processes managed by SELinux. In all versions of Docker up until 1.6.1, it is possible for malicious images to configure volume mounts such that files of proc may be overridden.
(CVE-2015-3631)

ID	Name	Product	Family	Severity
270307	SUSE SLES15 / openSUSE 15 Security Update : docker-stable (SUSE-SU-2025:03545-1)	Nessus	SuSE Local Security Checks	critical
270099	SUSE SLES12 Security Update : docker-stable (SUSE-SU-2025:03540-1)	Nessus	SuSE Local Security Checks	critical
83970	SUSE SLES12 Security Update : docker (SUSE-SU-2015:0984-1)	Nessus	SuSE Local Security Checks	high
83776	Oracle Linux 6 / 7 : docker (ELSA-2015-3037)	Nessus	Oracle Linux Local Security Checks	high
83557	openSUSE Security Update : docker (openSUSE-2015-365)	Nessus	SuSE Local Security Checks	high
83280	Amazon Linux AMI : docker (ALAS-2015-522)	Nessus	Amazon Linux Local Security Checks	high

Detections

Analytics

CVE-2015-3627

high

Tenable Plugins

critical

critical

high

high

high

high