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alpinelinuxAlpine Linux Development TeamALPINE:CVE-2021-21362
HistoryMar 08, 2021 - 7:15 p.m.

CVE-2021-21362

2021-03-0819:15:13
Alpine Linux Development Team
security.alpinelinux.org
16
minio
open-source
object storage
s3 compatible
vulnerability
readonly policy
bypass
multi-users
fix
workaround
content-type
restobjectpost
proxy

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.001

Percentile

43.2%

MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage service. In MinIO before version RELEASE.2021-03-04T00-53-13Z it is possible to bypass a readOnly policy by creating a temporary ‘mc share upload’ URL. Everyone is impacted who uses MinIO multi-users. This is fixed in version RELEASE.2021-03-04T00-53-13Z. As a workaround, one can disable uploads with Content-Type: multipart/form-data as mentioned in the S3 API RESTObjectPOST docs by using a proxy in front of MinIO.

OSVersionArchitecturePackageVersionFilename
Alpine3.17-communitynoarchminio= 0.20221029.062133-r5UNKNOWN
Alpine3.18-communitynoarchminio= 0.20230920.224955-r2UNKNOWN
Alpine3.19-communitynoarchminio= 0.20240131.202033-r3UNKNOWN
Alpine3.20-communitynoarchminio= 0.20240527.191746-r2UNKNOWN
Alpineedge-communitynoarchminio= 0.20240922.003343-r0UNKNOWN

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.001

Percentile

43.2%