CVE-2023-52557

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Source

https://cve.org/CVERecord?id=CVE-2023-52557

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52557.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2023-52557

Published

2024-03-01T16:14:56Z

Modified

2026-10-21T08:47:08Z

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

OpenBSD 7.3 invalid l2tp message npppd crash

Details

In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.

Database specific

{
    "cna_assigner":  "cisa-cg",
    "cwe_ids":  [
        "CWE-131"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52557.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "7.3"
                        },
                        {
                            "fixed":  "7.3 errata 016"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/openbsd/src

Affected ranges

Type

GIT

Repo

https://github.com/openbsd/src

Events

Introduced

Fixed

abf3a29384c582c807a621e7fc6e7c68d0cafe9b

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "fixed":  "abf3a29384c582c807a621e7fc6e7c68d0cafe9b"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52557.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "252207991687620231157307867516751464601",
                "7477790675801283476192585769728895479",
                "125607958284186576551419214814033123657",
                "55814652926492752881875901129496052630",
                "324062631662547870977583214179082779379",
                "305299565498633959460164086721196608955",
                "213308637441066806961802324221908286857",
                "257052028291823747396283323863794895879",
                "211281388243539926945975110982443309431",
                "21752273253173746496886209508975186248",
                "3714257554945000453861032135311676883",
                "81126491692855298961780591838636059355",
                "209875395882830449938697011182798109076",
                "327274901907437536353128895110058968052"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2023-52557-4fa71124",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/openbsd/src/commit/abf3a29384c582c807a621e7fc6e7c68d0cafe9b",
        "target":  {
            "file":  "usr.sbin/npppd/l2tp/l2tp_subr.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "177644512207446200987551473711565046359",
            "length":  374
        },
        "id":  "CVE-2023-52557-5d3580cf",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/openbsd/src/commit/abf3a29384c582c807a621e7fc6e7c68d0cafe9b",
        "target":  {
            "file":  "usr.sbin/npppd/l2tp/l2tp_subr.c",
            "function":  "avp_find"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "75169019155927852265501250106024401690",
            "length":  614
        },
        "id":  "CVE-2023-52557-71217df7",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/openbsd/src/commit/abf3a29384c582c807a621e7fc6e7c68d0cafe9b",
        "target":  {
            "file":  "usr.sbin/npppd/l2tp/l2tp_subr.c",
            "function":  "avp_enum"
        }
    }
]

vanir_signatures_modified

"2026-10-21T08:47:08Z"