CVE-2020-28194

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2020-28194
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28194.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-28194
Related
  • GHSA-2m44-rh3c-x4gr
Published
2021-02-01T14:15:12.240Z
Modified
2025-11-14T10:59:44.383315Z
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.

References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://github.com/accel-ppp/accel-ppp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e9d369aa0054312b7633e964e9f7eb323f1f3d69

Affected versions

1.*

1.10.0
1.12.0

Database specific

vanir_signatures

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