CVE-2021-37847

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Source

https://cve.org/CVERecord?id=CVE-2021-37847

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37847.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-37847

Published

2021-08-02T20:15:08.267Z

Modified

2026-04-11T18:44:51.011016Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

[none]

Details

crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest verification.

References

Affected packages

Git / github.com/saschahauer/barebox

Affected ranges

Type: GIT
Repo: https://github.com/saschahauer/barebox
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

0a9f9a7410681e55362f8311537ebc7be9ad0fbe

Type: GIT
Repo: https://github.com/saschahauer/barebox
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

0a9f9a7410681e55362f8311537ebc7be9ad0fbe

Database specific

vanir_signatures_modified

"2026-04-11T18:44:51Z"

vanir_signatures

[
    {
        "id": "CVE-2021-37847-8199349f",
        "target": {
            "file": "crypto/digest.c",
            "function": "digest_generic_verify"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "301584889156069090904562622525040506434",
            "length": 319.0
        },
        "signature_type": "Function",
        "source": "https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe",
        "signature_version": "v1"
    },
    {
        "id": "CVE-2021-37847-b9d9c9e4",
        "target": {
            "file": "crypto/digest.c"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "271334619018219239287410104355572862397",
                "320835556679015987297444744653922937837",
                "248201803692037093671842504412337342173",
                "285480366245170309515497581774649101074",
                "27282573744850338018709588609223000560",
                "258290346364336418964311691047936510878",
                "254309928623789668069109864278546826273",
                "316172920102987295883885030603775344160",
                "339271843571112485462380948539623857566"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe",
        "signature_version": "v1"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37847.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "2021.07.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "2021.07.0"
            }
        ]
    }
]