{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2023-4408", "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "state": "PUBLISHED", "assignerShortName": "isc", "dateReserved": "2023-08-18T07:59:28.420Z", "datePublished": "2024-02-13T14:04:17.519Z", "dateUpdated": "2024-08-02T07:24:04.673Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc", "dateUpdated": "2024-02-13T14:04:17.519Z" }, "title": "Parsing large DNS messages may cause excessive CPU load", "datePublic": "2024-02-13T00:00:00Z", "affected": [ { "vendor": "ISC", "product": "BIND 9", "versions": [ { "version": "9.0.0", "lessThanOrEqual": "9.16.45", "status": "affected", "versionType": "custom" }, { "version": "9.18.0", "lessThanOrEqual": "9.18.21", "status": "affected", "versionType": "custom" }, { "version": "9.19.0", "lessThanOrEqual": "9.19.19", "status": "affected", "versionType": "custom" }, { "version": "9.9.3-S1", "lessThanOrEqual": "9.11.37-S1", "status": "affected", "versionType": "custom" }, { "version": "9.16.8-S1", "lessThanOrEqual": "9.16.45-S1", "status": "affected", "versionType": "custom" }, { "version": "9.18.11-S1", "lessThanOrEqual": "9.18.21-S1", "status": "affected", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" } } ], "descriptions": [ { "lang": "en", "value": "The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers.\nThis issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1." } ], "impacts": [ { "descriptions": [ { "lang": "en", "value": "By flooding the target server with queries exploiting this flaw an attacker can significantly impair the server's performance, effectively denying legitimate clients access to the DNS resolution service." } ] } ], "workarounds": [ { "lang": "en", "value": "No workarounds known." } ], "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 BIND 9: 9.16.48, 9.18.24, 9.19.21, 9.16.48-S1, or 9.18.24-S1." } ], "credits": [ { "lang": "en", "value": "ISC would like to thank Shoham Danino from Reichman University, Anat Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University, and Yuval Shavitt from Tel-Aviv University for bringing this vulnerability to our attention." } ], "references": [ { "url": "https://kb.isc.org/docs/cve-2023-4408", "name": "CVE-2023-4408", "tags": [ "vendor-advisory" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/02/13/1" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/" }, { "url": "https://security.netapp.com/advisory/ntap-20240426-0001/" } ], "source": { "discovery": "EXTERNAL" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-4408", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-02-21T20:37:05.447060Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:27:16.918Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:24:04.673Z" }, "title": "CVE Program Container", "references": [ { "url": "https://kb.isc.org/docs/cve-2023-4408", "name": "CVE-2023-4408", "tags": [ "vendor-advisory", "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/02/13/1", "tags": [ "x_transferred" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/", "tags": [ "x_transferred" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/", "tags": [ "x_transferred" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/", "tags": [ "x_transferred" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "tags": [ "x_transferred" ] }, { "url": "https://security.netapp.com/advisory/ntap-20240426-0001/", "tags": [ "x_transferred" ] } ] } ] } }