Improper Enforcement of Message Integrity During Transmission in a Communication Channel in minio.io minio

1) Improper Enforcement of Message Integrity During Transmission in a Communication Channel

EUVDB-ID: #VU64789

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21390

CWE-ID: CWE-924 - Improper Enforcement of Message Integrity During Transmission in a Communication Channel

Exploit availability: No

Description

The vulnerability allows a remote attacker to modify data on the system.

The vulnerability exists due to enabled MITM modification of request bodies that are meant to have integrity guaranteed by chunk signatures. A remote unauthenticated attacker can send a specially crafted data to modify data on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

minio: 2020-01-03T19-12-21Z - 2021-03-12T00-00-47Z

External links

http://github.com/minio/minio/commit/e197800f9055489415b53cf137e31e194aaf7ba0
http://github.com/minio/minio/pull/11801
http://github.com/minio/minio/security/advisories/GHSA-xr7r-7gpj-5pgp

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.