cvelist/2020/8xxx/CVE-2020-8622.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-officer@isc.org",
        "DATE_PUBLIC": "2020-08-20T18:35:08.000Z",
        "ID": "CVE-2020-8622",
        "STATE": "PUBLIC",
        "TITLE": "A truncated TSIG response can lead to an assertion failure"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "BIND9",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": ">=",
                                            "version_value": "9.0.0"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_value": "9.11.22"
                                        },
                                        {
                                            "version_affected": ">=",
                                            "version_value": "9.12.0"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_value": "9.16.6"
                                        },
                                        {
                                            "version_affected": ">=",
                                            "version_value": "9.17.0"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_value": "9.17.4"
                                        },
                                        {
                                            "version_affected": ">=",
                                            "version_name": "Supported Preview",
                                            "version_value": "9.9.3-S1"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "Supported Preview",
                                            "version_value": "9.11.22-S1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "ISC"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "ISC would like to thank Dave Feldman, Jeff Warren, and Joel Cunningham of Oracle for bringing this vulnerability to our attention."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit."
            }
        ]
    },
    "exploit": [
        {
            "lang": "eng",
            "value": "We are not aware of any active exploits"
        }
    ],
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Attempting to verify a truncated response to a TSIG-signed request leads to an assertion failure.  Affects BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://kb.isc.org/docs/cve-2020-8622",
                "refsource": "CONFIRM",
                "url": "https://kb.isc.org/docs/cve-2020-8622"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-a02b7a0f21",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20200827-0003/",
                "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4468-1",
                "url": "https://usn.ubuntu.com/4468-1/"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4468-2",
                "url": "https://usn.ubuntu.com/4468-2/"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4752",
                "url": "https://www.debian.org/security/2020/dsa-4752"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-14c194e5af",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202008-19",
                "url": "https://security.gentoo.org/glsa/202008-19"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://www.synology.com/security/advisory/Synology_SA_20_19",
                "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.22\n    BIND 9.16.6\n    BIND 9.17.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.22-S1\n"
        }
    ],
    "source": {
        "discovery": "USER"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "No workarounds known."
        }
    ]
}