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mageiaGentoo FoundationMGASA-2021-0500
HistoryOct 31, 2021 - 2:12 p.m.

Updated docker packages fix security vulnerabilities

2021-10-3114:12:48
Gentoo Foundation
advisories.mageia.org
15

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

44.4%

Updated docker packages fix security vulnerabilities: A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp into a specially-crafted container can result in Unix file permission changes for existing files in the hosts filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process (CVE-2021-41089). 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 (CVE-2021-41091). 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 (CVE-2021-41092).

OSVersionArchitecturePackageVersionFilename
Mageia8noarchdocker< 20.10.9-3docker-20.10.9-3.mga8

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

44.4%