vuln-cve/data/2023/4xxx/CVE-2023-4809.json

{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-4809",
        "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "state": "PUBLISHED",
        "assignerShortName": "freebsd",
        "dateReserved": "2023-09-06T17:11:30.349Z",
        "datePublished": "2023-09-06T19:26:45.833Z",
        "dateUpdated": "2025-02-13T17:18:10.982Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unknown",
                    "modules": [
                        "pf"
                    ],
                    "product": "FreeBSD",
                    "vendor": "FreeBSD",
                    "versions": [
                        {
                            "lessThan": "p3",
                            "status": "affected",
                            "version": "13.2-RELEASE",
                            "versionType": "release"
                        },
                        {
                            "lessThan": "p5",
                            "status": "affected",
                            "version": "12.4-RELEASE",
                            "versionType": "release"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "user": "00000000-0000-4000-9000-000000000000",
                    "value": "Enrico Bassetti bassetti@di.uniroma1.it (NetSecurityLab @ Sapienza University of Rome)"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<div>In pf packet processing with a 'scrub fragment reassemble' rule, a packet containing multiple IPv6 fragment headers would be reassembled, and then immediately processed.  That is, a packet with multiple fragment extension headers would not be recognized as the correct ultimate payload. Instead a packet with multiple IPv6 fragment headers would unexpectedly be interpreted as a fragmented packet, rather than as whatever the real payload is.</div><div><br></div><div>As a result, IPv6 fragments may bypass pf firewall rules written on the assumption all fragments have been reassembled and, as a result, be forwarded or processed by the host.</div>"
                        }
                    ],
                    "value": "In pf packet processing with a 'scrub fragment reassemble' rule, a packet containing multiple IPv6 fragment headers would be reassembled, and then immediately processed.  That is, a packet with multiple fragment extension headers would not be recognized as the correct ultimate payload. Instead a packet with multiple IPv6 fragment headers would unexpectedly be interpreted as a fragmented packet, rather than as whatever the real payload is.\n\n\n\n\nAs a result, IPv6 fragments may bypass pf firewall rules written on the assumption all fragments have been reassembled and, as a result, be forwarded or processed by the host."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-167",
                            "description": "CWE-167: Improper Handling of Additional Special Element",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
                "shortName": "freebsd",
                "dateUpdated": "2023-12-21T22:06:15.441Z"
            },
            "references": [
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:10.pf.asc"
                },
                {
                    "url": "http://www.openwall.com/lists/oss-security/2023/09/08/5"
                },
                {
                    "url": "http://www.openwall.com/lists/oss-security/2023/09/08/6"
                },
                {
                    "url": "http://www.openwall.com/lists/oss-security/2023/09/08/7"
                },
                {
                    "url": "https://security.netapp.com/advisory/ntap-20231221-0009/"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "pf incorrectly handles multiple IPv6 fragment headers",
            "x_generator": {
                "engine": "Vulnogram 0.1.0-dev"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T07:38:00.699Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:10.pf.asc"
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2023/09/08/5",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2023/09/08/6",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2023/09/08/7",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://security.netapp.com/advisory/ntap-20231221-0009/",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}