Detections
Analytics
Amazon Linux 2 : docker (ALASDOCKER-2022-017)
high Nessus Plugin ID 160411
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Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of docker installed on the remote host is prior to 20.10.7-3. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2DOCKER-2022-017 advisory.A file permissions vulnerability was found in Moby (Docker Engine). Copying files by using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host's filesystem, which might lead to permissions escalation and allow an attacker access to restricted data. (CVE-2021-41089)
Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where the data directory (typically `/var/lib/docker`) contained subdirectories with insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as `setuid`), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade limit access to the host to trusted users. Limit access to host volumes to trusted containers.
(CVE-2021-41091)
Docker CLI is the command line interface for the docker container runtime. A bug was found in the Docker CLI where running `docker login my-private-registry.example.com` with a misconfigured configuration file (typically `~/.docker/config.json`) listing a `credsStore` or `credHelpers` that could not be executed would result in any provided credentials being sent to `registry-1.docker.io` rather than the intended private registry. This bug has been fixed in Docker CLI 20.10.9. Users should update to this version as soon as possible. For users unable to update ensure that any configured credsStore or credHelpers entries in the configuration file reference an installed credential helper that is executable and on the PATH.
(CVE-2021-41092)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update docker' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALASDOCKER-2022-017.html
https://alas.aws.amazon.com/cve/html/CVE-2021-41089.html
Plugin Details
Severity: High
ID: 160411
File Name: al2_ALASDOCKER-2022-017.nasl
Version: 1.4
Type: local
Agent: unix
Published: 5/2/2022
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2021-41092
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:docker, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:docker-debuginfo
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/7/2022
Vulnerability Publication Date: 10/4/2021