CVE-2021-28484

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Source
https://cve.org/CVERecord?id=CVE-2021-28484
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-28484.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-28484
Aliases
Published
2021-04-14T18:15:14.440Z
Modified
2026-03-13T14:45:01.289972Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in the /api/connector endpoint handler in Yubico yubihsm-connector before 3.0.1 (in YubiHSM SDK before 2021.04). The handler did not validate the length of the request, which can lead to a state where yubihsm-connector becomes stuck in a loop waiting for the YubiHSM to send it data, preventing any further operations until the yubihsm-connector is restarted. An attacker can send 0, 1, or 2 bytes to trigger this.

References

Affected packages

Git / github.com/yubico/yubihsm-connector

Affected ranges

Type
GIT
Repo
https://github.com/yubico/yubihsm-connector
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
58717c35fb39ba5e9a4c950a7479a4464ca4ee2f
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.0.1"
        }
    ]
}

Affected versions

2.*
2.0.0
2.1.0
2.2.0
3.*
3.0.0

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-28484.json"