CVE-2021-32066

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

References

Affected packages

Git / github.com/ruby/ruby

Affected ranges

Type

GIT

Repo

https://github.com/ruby/ruby

Events

Introduced

c1af7b1e1d408f9796a5f46c9ed36bc5adea4aa2

Last affected

930143880a8b593e7444b94e2e0522b83a25c671

Introduced

647ee6f091eafcce70ffb75ddf7e121e192ab217

Last affected

6847ee089d7655b2a0eea4fee3133aeacd4cc7cc

Introduced

95aff214687a5e12c3eb57d056665741e734c188

Last affected

0fb782ee38ea37fd5fe8b1f775f8ad866a82a3f0

Fixed

a21a3b7d23704a01d34bd79d09dc37897e00922a

Database specific

{
    "versions": [
        {
            "introduced": "2.6.0"
        },
        {
            "last_affected": "2.6.7"
        },
        {
            "introduced": "2.7.0"
        },
        {
            "last_affected": "2.7.3"
        },
        {
            "introduced": "3.0.0"
        },
        {
            "last_affected": "3.0.1"
        }
    ]
}

Affected versions

Other

v2_7_0

v2_7_1

v2_7_2

v2_7_3

v3_0_0

v3_0_1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32066.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "9.2.6.1"
            }
        ]
    }
]