CVE-2020-28194

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Source

https://cve.org/CVERecord?id=CVE-2020-28194

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28194.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2020-28194

Aliases

GHSA-2m44-rh3c-x4gr

Published

2021-02-01T14:15:12.240Z

Modified

2026-07-09T11:24:10.970674Z

Severity

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

Summary

[none]

Details

Variable underflow exists in accel-ppp radius/packet.c when receiving a RADIUS vendor-specific attribute with length field is less than 2. It has an impact only when the attacker controls the RADIUS server, which can lead to arbitrary code execution.

Database specific

{
    "unresolved_ranges": [
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:accel-ppp:accel-ppp:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "accel-ppp:accel-ppp",
            "extracted_events": [
                {
                    "fixed": "1.12.0-e9d369a"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/accel-ppp/accel-ppp

Affected ranges

Type

GIT

Repo

https://github.com/accel-ppp/accel-ppp

Events

Introduced

Fixed

e9d369aa0054312b7633e964e9f7eb323f1f3d69

Database specific

{
    "source": "REFERENCES"
}

Affected versions

1.*

1.10.0

1.12.0

Database specific

vanir_signatures

[
    {
        "digest": {
            "length": 3593.0,
            "function_hash": "218305480135744760965322474118285676607"
        },
        "signature_version": "v1",
        "source": "https://github.com/accel-ppp/accel-ppp/commit/e9d369aa0054312b7633e964e9f7eb323f1f3d69",
        "signature_type": "Function",
        "target": {
            "function": "rad_packet_recv",
            "file": "accel-pppd/radius/packet.c"
        },
        "id": "CVE-2020-28194-28ac3858",
        "deprecated": false
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "53169831652962479236524189091079696734",
                "193894202797788791053606579230416303418",
                "56156999255468833464194175077938322916",
                "108214281405374322627184477935854642973"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/accel-ppp/accel-ppp/commit/e9d369aa0054312b7633e964e9f7eb323f1f3d69",
        "signature_type": "Line",
        "target": {
            "file": "accel-pppd/radius/packet.c"
        },
        "id": "CVE-2020-28194-2fff89dc",
        "deprecated": false
    }
]

vanir_signatures_modified

"2026-07-09T11:24:10Z"

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28194.json"