{"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&nbsp;Discovery Protocol implementation for Cisco&nbsp;IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco&nbsp;Discovery Protocol process to reload on an affected device.\r\nThis vulnerability is due to a heap buffer overflow in certain Cisco&nbsp;Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco&nbsp;Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow, which could cause the Cisco&nbsp;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&nbsp;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). &nbsp;Cisco&nbsp;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&nbsp;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</a></p><p>This advisory is part of the September 2022 release of the Cisco&nbsp;IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see <a href=\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74840\">Cisco&nbsp;Event Response: September 2022 Semiannual Cisco&nbsp;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</a></p><p>This advisory is part of the September 2022 release of the Cisco&nbsp;IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see <a href=\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74840\">Cisco&nbsp;Event Response: September 2022 Semiannual Cisco&nbsp;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"}}]}}