{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2022-20846", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2021-11-02T13:28:29.179Z", "datePublished": "2024-11-15T15:32:38.495Z", "dateUpdated": "2024-11-15T16:41:07.934Z" }, "containers": { "cna": { "title": "Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability", "metrics": [ { "format": "cvssV3_1", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW" } } ], "descriptions": [ { "lang": "en", "value": "A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device.\r\nThis vulnerability is due to a heap buffer overflow in certain Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow, which could cause the Cisco Discovery Protocol process to reload on the device. The bytes that can be written in the buffer overflow are restricted, which limits remote code execution.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see ." } ], "references": [ { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2", "name": "cisco-sa-xr-cdp-wnALzvT2" }, { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt", "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt

This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2022 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication" }, { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6", "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6

This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2022 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication" } ], "exploits": [ { "lang": "en", "value": "The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerability described in this advisory.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory." } ], "source": { "advisory": "cisco-sa-xr-cdp-wnALzvT2", "discovery": "EXTERNAL", "defects": [ "CSCwb23263" ] }, "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "type": "cwe", "cweId": "CWE-120" } ] } ], "affected": [ { "vendor": "Cisco", "product": "Cisco IOS XR Software", "versions": [ { "version": "6.5.3", "status": "affected" }, { "version": "6.5.29", "status": "affected" }, { "version": "6.5.1", "status": "affected" }, { "version": "6.6.1", "status": "affected" }, { "version": "6.5.2", "status": "affected" }, { "version": "6.5.92", "status": "affected" }, { "version": "6.5.15", "status": "affected" }, { "version": "6.6.2", "status": "affected" }, { "version": "7.0.1", "status": "affected" }, { "version": "6.6.25", "status": "affected" }, { "version": "6.5.26", "status": "affected" }, { "version": "6.6.11", "status": "affected" }, { "version": "6.5.25", "status": "affected" }, { "version": "6.5.28", "status": "affected" }, { "version": "6.5.93", "status": "affected" }, { "version": "6.6.12", "status": "affected" }, { "version": "6.5.90", "status": "affected" }, { "version": "7.0.0", "status": "affected" }, { "version": "7.1.1", "status": "affected" }, { "version": "7.0.90", "status": "affected" }, { "version": "6.6.3", "status": "affected" }, { "version": "6.7.1", "status": "affected" }, { "version": "7.0.2", "status": "affected" }, { "version": "7.1.15", "status": "affected" }, { "version": "7.2.0", "status": "affected" }, { "version": "7.2.1", "status": "affected" }, { "version": "7.1.2", "status": "affected" }, { "version": "6.7.2", "status": "affected" }, { "version": "7.0.11", "status": "affected" }, { "version": "7.0.12", "status": "affected" }, { "version": "7.0.14", "status": "affected" }, { "version": "7.1.25", "status": "affected" }, { "version": "6.6.4", "status": "affected" }, { "version": "7.2.12", "status": "affected" }, { "version": "7.3.1", "status": "affected" }, { "version": "7.1.3", "status": "affected" }, { "version": "6.7.3", "status": "affected" }, { "version": "7.4.1", "status": "affected" }, { "version": "7.2.2", "status": "affected" }, { "version": "6.7.4", "status": "affected" }, { "version": "6.5.31", "status": "affected" }, { "version": "7.3.15", "status": "affected" }, { "version": "7.3.16", "status": "affected" }, { "version": "6.8.1", "status": "affected" }, { "version": "7.4.15", "status": "affected" }, { "version": "6.5.32", "status": "affected" }, { "version": "7.3.2", "status": "affected" }, { "version": "7.5.1", "status": "affected" }, { "version": "7.4.16", "status": "affected" }, { "version": "7.3.27", "status": "affected" }, { "version": "7.6.1", "status": "affected" }, { "version": "7.5.2", "status": "affected" }, { "version": "7.6.15", "status": "affected" }, { "version": "7.5.12", "status": "affected" }, { "version": "7.3.3", "status": "affected" }, { "version": "6.8.2", "status": "affected" }, { "version": "7.3.4", "status": "affected" }, { "version": "7.4.2", "status": "affected" }, { "version": "6.7.35", "status": "affected" }, { "version": "6.9.1", "status": "affected" } ], "defaultStatus": "unknown" } ], "providerMetadata": { "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-11-15T15:32:38.495Z" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-11-15T16:40:55.507077Z", "id": "CVE-2022-20846", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-15T16:41:07.934Z" } } ] } }