{
  "GSD": {
    "alias": "CVE-2024-20337",
    "id": "GSD-2024-20337"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-20337"
      ],
      "details": "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.",
      "id": "GSD-2024-20337",
      "modified": "2023-12-13T01:21:43.043763Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "psirt@cisco.com",
        "ID": "CVE-2024-20337",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Cisco Secure Client",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "4.9.00086"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.01095"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.02028"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.03047"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.03049"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.04043"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.04053"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.05042"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.9.06037"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.00093"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.01075"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.02086"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.03104"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.04065"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.04071"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.05085"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.05095"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.05111"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.06079"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.06090"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.07061"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.07062"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "4.10.07073"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.00238"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.00529"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.00556"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.01242"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.02075"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.03072"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.03076"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.04032"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.0.05040"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.1.0.136"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "5.1.1.42"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Cisco"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "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."
          }
        ]
      },
      "exploit": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-93",
                "lang": "eng",
                "value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7",
            "refsource": "MISC",
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
          }
        ]
      },
      "source": {
        "advisory": "cisco-sa-secure-client-crlf-W43V4G7",
        "defects": [
          "CSCwi37512"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "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."
          }
        ],
        "id": "CVE-2024-20337",
        "lastModified": "2024-03-07T13:52:27.110",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 4.7,
              "source": "ykramarz@cisco.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2024-03-06T17:15:09.580",
        "references": [
          {
            "source": "ykramarz@cisco.com",
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
          }
        ],
        "sourceIdentifier": "ykramarz@cisco.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-93"
              }
            ],
            "source": "ykramarz@cisco.com",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-20337"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-93"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-06T17:15:09Z",
    "severity": "HIGH"
  },
  "details": "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. \n\n 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.",
  "id": "GHSA-j296-jhq5-3x6c",
  "modified": "2024-03-06T18:30:37Z",
  "published": "2024-03-06T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20337"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Cisco Secure Client ist ein Sicherheits-Client, der auf Cisco AnyConnect, einer Remote-Access-L\u00f6sung und einer Reihe von modularen Sicherheitsdiensten aufbaut.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Cisco Secure Client ausnutzen, um Benutzerrechte zu erlangen oder seine Privilegien zu erweitern.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- CISCO Appliance",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2024-0565 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0565.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-0565 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0565"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory vom 2024-03-06",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory vom 2024-03-06",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-privesc-sYxQO6ds"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco Secure Client: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2024-03-06T23:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T18:06:10.960+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2024-0565",
      "initial_release_date": "2024-03-06T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-03-06T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 4.10.08025",
                "product": {
                  "name": "Cisco Secure Client \u003c 4.10.08025",
                  "product_id": "T033282"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c 5.1.2.42",
                "product": {
                  "name": "Cisco Secure Client \u003c 5.1.2.42",
                  "product_id": "T033283"
                }
              }
            ],
            "category": "product_name",
            "name": "Secure Client"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-20337",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Cisco Secure Client. Diese ist auf eine Anf\u00e4lligkeit f\u00fcr CRLF-Angriffe zur\u00fcckzuf\u00fchren. Ein entfernter, anonymer Angreifer kann diese Schwachstelle ausnutzen, um Benutzerrechte zu \u00fcbernehmen. Zur erfolgreichen Ausnutzung ist eine Benutzeraktion erforderlich."
        }
      ],
      "release_date": "2024-03-06T23:00:00.000+00:00",
      "title": "CVE-2024-20337"
    },
    {
      "cve": "CVE-2024-20338",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Cisco Secure Client. Diese ist auf einen Fehler hinsichtlich einem unkontrollierten Such-pfad-Element zur\u00fcckzuf\u00fchren. Ein entfernter, authentisierter Angreifer kann diese Schwachstelle ausnutzen, um seine Privilegien zu erweitern. Zur erfolgreichen Ausnutzung ist eine Benutzeraktion erforderlich."
        }
      ],
      "release_date": "2024-03-06T23:00:00.000+00:00",
      "title": "CVE-2024-20338"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Paulos Yibelo Mesfin of Amazon Security for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "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\nThis 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.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco Secure Client and the VPN headend is configured with the SAML External Browser feature:\r\n\r\nSecure Client for Linux\r\nSecure Client for macOS\r\nSecure Client for Windows\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n\r\nDetermine the VPN Headend Configuration\r\n\r\nTo determine whether the VPN headend is configured to use the SAML External Browser feature, use the show running-config tunnel-group privileged EXEC command in the Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Threat Defense (FTD) Software CLI.\r\n\r\nThe following examples show the output of the command for a device that has the SAML External Browser feature enabled. This output is different based on the software release that is running on the device:\r\n\r\n\r\nciscoasa# show running-config tunnel-group\r\ntunnel-group EXAMPLE_GROUP type remote-access\r\ntunnel-group EXAMPLE_GROUP webvpn-attributes\r\n authentication saml\r\n saml external-browser\r\nsaml identity-provider EXAMPLE\r\n\r\nciscoasa# show running-config tunnel-group\r\ntunnel-group EXAMPLE_GROUP type remote-access\r\ntunnel-group EXAMPLE_GROUP webvpn-attributes\r\n authentication saml\r\n external-browser enable\r\nsaml identity-provider https://example.com",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nSecure Client AnyConnect for Android\r\nSecure Client (including AnyConnect) for Universal Windows Platform\r\nSecure Client AnyConnect VPN for iOS",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco has released free software updates [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu\"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.\r\n\r\nCustomers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nThe Cisco Support and Downloads page [\"https://www.cisco.com/c/en/us/support/index.html\"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n  Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n      Fixed Releases\r\nIn the following table, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in this section.\r\n        Cisco Secure Client Release  First Fixed Release          Earlier than 4.10.04065  Not vulnerable.      4.10.04065 and later  4.10.08025      5.0  Migrate to a fixed release.      5.1  5.1.2.42\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank Paulos Yibelo Mesfin of Amazon Security for reporting this vulnerability.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Secure Client Carriage Return Line Feed Injection Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "free software updates",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
        "url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
      },
      {
        "category": "external",
        "summary": "Cisco Support and Downloads page",
        "url": "https://www.cisco.com/c/en/us/support/index.html"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisories page",
        "url": "https://www.cisco.com/go/psirt"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Secure Client Carriage Return Line Feed Injection Vulnerability",
    "tracking": {
      "current_release_date": "2024-03-12T14:17:07+00:00",
      "generator": {
        "date": "2024-05-10T23:29:20+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-secure-client-crlf-W43V4G7",
      "initial_release_date": "2024-03-06T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2024-03-06T15:53:43+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2024-03-12T14:17:07+00:00",
          "number": "1.1.0",
          "summary": "Added example CLI output for recent software releases."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Secure Client",
            "product": {
              "name": "Cisco Secure Client ",
              "product_id": "CSAFPID-109810"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-20337",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwi37512"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-109810"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco Secure Client Software CRLF Injection Vulnerability"
    }
  ]
}

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:secure_client:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "10933A96-8975-4961-8804-9B75C6D2324B",
              "versionEndExcluding": "4.10.08025",
              "versionStartIncluding": "4.10.04065",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:secure_client:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "207CA3FC-560B-470D-9117-0CE73A128BC1",
              "versionEndExcluding": "5.1.2.42",
              "versionStartIncluding": "5.0.00529",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el proceso de autenticaci\u00f3n SAML de Cisco Secure Client podr\u00eda permitir que un atacante remoto no autenticado lleve a cabo un ataque de inyecci\u00f3n de avance de l\u00ednea de retorno de carro (CRLF) contra un usuario. Esta vulnerabilidad se debe a una validaci\u00f3n insuficiente de la entrada proporcionada por el usuario. Un atacante podr\u00eda aprovechar esta vulnerabilidad persuadiendo a un usuario para que haga clic en un enlace manipulado mientras establece una sesi\u00f3n VPN. Un exploit exitoso podr\u00eda permitir al atacante ejecutar c\u00f3digo de script arbitrario en el navegador o acceder a informaci\u00f3n confidencial basada en el navegador, incluido un token SAML v\u00e1lido. Luego, el atacante podr\u00eda usar el token para establecer una sesi\u00f3n VPN de acceso remoto con los privilegios del usuario afectado. Los hosts y servicios individuales detr\u00e1s de la cabecera VPN a\u00fan necesitar\u00edan credenciales adicionales para un acceso exitoso."
    }
  ],
  "id": "CVE-2024-20337",
  "lastModified": "2025-07-22T18:00:37.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.7,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-03-06T17:15:09.580",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco Secure Client versions 5.0.x toutes versions",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client versions 5.1.x ant\u00e9rieures \u00e0 5.1.2.42",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client versions 4.10.x post\u00e9rieures \u00e0 4.10.04065 et ant\u00e9rieures \u00e0 4.10.08025",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client pour Linux versions ant\u00e9rieures \u00e0 5.1.2.42",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2024-20338",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-20338"
    },
    {
      "name": "CVE-2024-20337",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-20337"
    }
  ],
  "links": [
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco\u00a0cisco-sa-secure-privesc-sYxQO6ds du 06 mars 2024",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-privesc-sYxQO6ds"
    }
  ],
  "reference": "CERTFR-2024-AVI-0190",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2024-03-07T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Injection de code indirecte \u00e0 distance (XSS)"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans \u003cspan\nclass=\"textit\"\u003eles produits Cisco\u003c/span\u003e. Certaines d\u0027entre elles\npermettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges et\nune injection de code indirecte \u00e0 distance (XSS).\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-secure-privesc-sYxQO6ds du 06 mars 2024",
      "url": null
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-secure-client-crlf-W43V4G7 du 06 mars 2024",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco Secure Client versions 5.0.x toutes versions",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client versions 5.1.x ant\u00e9rieures \u00e0 5.1.2.42",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client versions 4.10.x post\u00e9rieures \u00e0 4.10.04065 et ant\u00e9rieures \u00e0 4.10.08025",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Secure Client pour Linux versions ant\u00e9rieures \u00e0 5.1.2.42",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2024-20338",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-20338"
    },
    {
      "name": "CVE-2024-20337",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-20337"
    }
  ],
  "links": [
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco\u00a0cisco-sa-secure-privesc-sYxQO6ds du 06 mars 2024",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-privesc-sYxQO6ds"
    }
  ],
  "reference": "CERTFR-2024-AVI-0190",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2024-03-07T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Injection de code indirecte \u00e0 distance (XSS)"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans \u003cspan\nclass=\"textit\"\u003eles produits Cisco\u003c/span\u003e. Certaines d\u0027entre elles\npermettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges et\nune injection de code indirecte \u00e0 distance (XSS).\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-secure-privesc-sYxQO6ds du 06 mars 2024",
      "url": null
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-secure-client-crlf-W43V4G7 du 06 mars 2024",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
    }
  ]
}