{"id":"CVE-2022-20952","state":"PUBLISHED","title":"A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticat","description":"A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked.\r\n\r This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.","publishedAt":"2023-02-16T15:27:16.003Z","updatedAt":"2024-08-03T02:31:59.019Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Secure Web Appliance"],"affected":[{"vendor":"Cisco","product":"Cisco Secure Web Appliance","versions":[{"version":"11.8.0-414","status":"affected"},{"version":"11.8.1-023","status":"affected"},{"version":"11.8.3-018","status":"affected"},{"version":"11.8.3-021","status":"affected"},{"version":"12.0.1-268","status":"affected"},{"version":"12.0.3-007","status":"affected"},{"version":"12.5.2-007","status":"affected"},{"version":"12.5.1-011","status":"affected"},{"version":"12.5.4-005","status":"affected"},{"version":"12.5.5-004","status":"affected"},{"version":"14.5.0-498","status":"affected"},{"version":"14.0.3-014","status":"affected"},{"version":"14.0.2-012","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T19:49:32.184Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/20xxx/CVE-2022-20952.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-20952","state":"PUBLISHED","datePublished":"2023-02-16T15:27:16.003Z","dateUpdated":"2024-08-03T02:31:59.019Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2021-11-02T13:28:29.194Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked.\r\n\r This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device."}],"affected":[{"vendor":"Cisco","product":"Cisco Secure Web Appliance","versions":[{"version":"11.8.0-414","status":"affected"},{"version":"11.8.1-023","status":"affected"},{"version":"11.8.3-018","status":"affected"},{"version":"11.8.3-021","status":"affected"},{"version":"12.0.1-268","status":"affected"},{"version":"12.0.3-007","status":"affected"},{"version":"12.5.2-007","status":"affected"},{"version":"12.5.1-011","status":"affected"},{"version":"12.5.4-005","status":"affected"},{"version":"12.5.5-004","status":"affected"},{"version":"14.5.0-498","status":"affected"},{"version":"14.0.3-014","status":"affected"},{"version":"14.0.2-012","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek","name":"cisco-sa-wsa-bypass-bwBfugek"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"Improper Input Validation","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2024-01-25T16:57:24.396Z"},"exploits":[{"lang":"en","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."}],"source":{"advisory":"cisco-sa-wsa-bypass-bwBfugek","discovery":"INTERNAL","defects":["CSCwc54898"]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek","name":"cisco-sa-wsa-bypass-bwBfugek","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T02:31:59.019Z"}}]}}}