vuln-cve/data/2022/2xxx/CVE-2022-2929.json

{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2022-2929",
        "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "assignerShortName": "isc",
        "dateUpdated": "2024-09-16T18:28:37.665Z",
        "dateReserved": "2022-08-22T00:00:00.000Z",
        "datePublished": "2022-10-07T04:45:12.836Z"
    },
    "containers": {
        "cna": {
            "title": "DHCP memory leak",
            "datePublic": "2022-10-05T00:00:00.000Z",
            "providerMetadata": {
                "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
                "shortName": "isc",
                "dateUpdated": "2023-05-03T00:00:00.000Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory."
                }
            ],
            "affected": [
                {
                    "vendor": "ISC",
                    "product": "ISC DHCP",
                    "versions": [
                        {
                            "version": "1.0 through versions before 4.1-ESV-R16-P2",
                            "status": "affected"
                        },
                        {
                            "version": "4.2 through versions before 4.4.3.-P1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://kb.isc.org/docs/cve-2022-2929"
                },
                {
                    "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html"
                },
                {
                    "name": "FEDORA-2022-f5a45757df",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/"
                },
                {
                    "name": "FEDORA-2022-9ca9a94e28",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/"
                },
                {
                    "name": "FEDORA-2022-c4f274a54f",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/"
                },
                {
                    "name": "GLSA-202305-22",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.gentoo.org/glsa/202305-22"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "ISC would like to thank VictorV of Cyber Kunlun Lab for discovering and reporting this issue."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "attackVector": "ADJACENT_NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "text",
                            "lang": "en",
                            "description": "The function fqdn_universe_decode() allocates buffer space for the contents of option 81 (fqdn) data received in a DHCP packet. The maximum length of a DNS label is 63 bytes. The function tests the length byte of each label contained in the fqdn; if it finds a label whose length byte value is larger than 63, it returns without dereferencing the buffer space. This will cause a memory leak. Affects In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1"
                        }
                    ]
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "workarounds": [
                {
                    "lang": "en",
                    "value": "As exploiting this vulnerability requires an attacker to send packets for an extended period of time, restarting servers periodically could be a viable workaround."
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "We are not aware of any active exploits."
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to the patched release most closely related to your current version of ISC DHCP. These can all be downloaded from https://www.isc.org/downloads.  4.4.3-P1 4.1-ESV-R16-P2"
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T00:52:59.819Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://kb.isc.org/docs/cve-2022-2929",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html"
                    },
                    {
                        "name": "FEDORA-2022-f5a45757df",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/"
                    },
                    {
                        "name": "FEDORA-2022-9ca9a94e28",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/"
                    },
                    {
                        "name": "FEDORA-2022-c4f274a54f",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/"
                    },
                    {
                        "name": "GLSA-202305-22",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://security.gentoo.org/glsa/202305-22"
                    }
                ]
            }
        ]
    }
}