{"id":"CVE-2024-20337","state":"PUBLISHED","title":"A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection at","description":"A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. \r\n\r This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access.","publishedAt":"2024-03-06T16:30:02.285Z","updatedAt":"2024-08-01T21:59:42.871Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Secure Client"],"affected":[{"vendor":"Cisco","product":"Cisco Secure Client","versions":[{"version":"4.9.00086","status":"affected"},{"version":"4.9.01095","status":"affected"},{"version":"4.9.02028","status":"affected"},{"version":"4.9.03047","status":"affected"},{"version":"4.9.03049","status":"affected"},{"version":"4.9.04043","status":"affected"},{"version":"4.9.04053","status":"affected"},{"version":"4.9.05042","status":"affected"},{"version":"4.9.06037","status":"affected"},{"version":"4.10.00093","status":"affected"},{"version":"4.10.01075","status":"affected"},{"version":"4.10.02086","status":"affected"},{"version":"4.10.03104","status":"affected"},{"version":"4.10.04065","status":"affected"},{"version":"4.10.04071","status":"affected"},{"version":"4.10.05085","status":"affected"},{"version":"4.10.05095","status":"affected"},{"version":"4.10.05111","status":"affected"},{"version":"4.10.06079","status":"affected"},{"version":"4.10.06090","status":"affected"},{"version":"4.10.07061","status":"affected"},{"version":"4.10.07062","status":"affected"},{"version":"4.10.07073","status":"affected"},{"version":"5.0.00238","status":"affected"},{"version":"5.0.00529","status":"affected"},{"version":"5.0.00556","status":"affected"},{"version":"5.0.01242","status":"affected"},{"version":"5.0.02075","status":"affected"},{"version":"5.0.03072","status":"affected"},{"version":"5.0.03076","status":"affected"},{"version":"5.0.04032","status":"affected"},{"version":"5.0.05040","status":"affected"},{"version":"5.1.0.136","status":"affected"},{"version":"5.1.1.42","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"],"weaknesses":["CWE-93"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/20xxx/CVE-2024-20337.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-20337","state":"PUBLISHED","datePublished":"2024-03-06T16:30:02.285Z","dateUpdated":"2024-08-01T21:59:42.871Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2023-11-08T15:08:07.642Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. \r\n\r This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access."}],"affected":[{"vendor":"Cisco","product":"Cisco Secure 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