cisco-sa-anyconnect-code-exec-jR3tWTA6
Vulnerability from csaf_cisco
Published
2021-05-05 16:00
Modified
2021-05-05 16:00
Summary
Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking Vulnerabilities

Notes

Summary
Multiple vulnerabilities in the install, uninstall, and upgrade processes of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to hijack DLL or executable files that are used by the application. A successful exploit could allow the attacker to execute arbitrary code on an affected device with SYSTEM privileges. To exploit these vulnerabilities, the attacker must have valid credentials on the Windows system. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6 ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6"]
Vulnerable Products
These vulnerabilities affect Cisco devices if they are running a vulnerable release of Cisco AnyConnect Secure Mobility Client for Windows. For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by these vulnerabilities. Cisco has confirmed that these vulnerabilities do not affect the following Cisco products: AnyConnect Secure Mobility Client for Linux AnyConnect Secure Mobility Client for Mac OS AnyConnect Secure Mobility Client for mobile device operating systems such as iOS, Android, and Universal Windows Platform
Details
The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities. Details about the vulnerabilities are as follows. Cisco AnyConnect Secure Mobility Client for Windows Uninstall Executable Hijacking Vulnerability A vulnerability in the uninstall process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device. This vulnerability exists because a temporary file with insecure permissions is created during the uninstall process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvv43102, CSCvv60844 CVE ID(s): CVE-2021-1426 Security Impact Rating (SIR): High CVSS Base Score: 7.0 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Cisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijacking Vulnerabilities Two vulnerabilities in the upgrade process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device. These vulnerabilities exist because the application loads a DLL file from a user-writable directory. An attacker could exploit these vulnerabilities by copying a malicious DLL file to a specific directory. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit these vulnerabilities, the attacker must have valid credentials on the Windows system. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. Bug ID(s): CSCvw16996, CSCvw17005 CVE ID(s): CVE-2021-1427, CVE-2021-1428 Security Impact Rating (SIR): High CVSS Base Score: 7.0 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Cisco AnyConnect Secure Mobility Client for Windows Upgrade Executable Hijacking Vulnerability A vulnerability in the install process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device. This vulnerability exists because a temporary file with insecure permissions is created during the upgrade process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvw18527 CVE ID(s): CVE-2021-1429 Security Impact Rating (SIR): High CVSS Base Score: 7.0 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Cisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijacking Vulnerability A vulnerability in the upgrade process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device. This vulnerability exists because a temporary file with insecure permissions is created during the upgrade process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvw18595 CVE ID(s): CVE-2021-1430 Security Impact Rating (SIR): High CVSS Base Score: 7.0 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Cisco AnyConnect Secure Mobility Client for Windows Install Executable Hijacking Vulnerability A vulnerability in the install process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device. This vulnerability exists because the application loads an executable file from a user-writable directory. An attacker could exploit this vulnerability by copying a malicious executable file to a specific directory, which would be executed when the application is installed or upgraded. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker needs valid credentials on the Windows system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvu77671 CVE ID(s): CVE-2021-1496 Security Impact Rating (SIR): High CVSS Base Score: 7.0 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Workarounds
There are no workarounds that address these vulnerabilities.
Fixed Software
Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers 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: https://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"] Additionally, 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. When 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. In 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. Customers Without Service Contracts Customers 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"] Customers 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. Fixed Releases In the following table, the left column lists the CVE identifiers for the vulnerabilities that are addressed in this advisory. The center column indicates which software releases are affected by the vulnerability. The right column lists the first release that includes the fix for that vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section. CVE Identifiers Affected Releases of Cisco AnyConnect Secure Mobility Client for Windows First Fixed Release for This Vulnerability CVE-2021-1426 Earlier than 4.9.06037 4.9.06037 CVE-2021-1427 Earlier than 4.9.06037 4.9.06037 CVE-2021-1428 Earlier than 4.10.00093 4.10.00093 CVE-2021-1429 Earlier than 4.10.00093 4.10.00093 CVE-2021-1430 Earlier than 4.9.06037 4.9.06037 CVE-2021-1496 Earlier than 4.9.03022 4.9.03022 To download the software from the Software Center ["https://software.cisco.com/download/"] on Cisco.com, do the following: Click Browse all. Choose Security > VPN and Endpoint Security Clients > Cisco VPN Clients > AnyConnect Secure Mobility Client > AnyConnect Secure Mobility Client v4.x. Choose a release from the left pane of the AnyConnect Secure Mobility Client v4.x page.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
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
Cisco would like the following people for reporting these vulnerabilities: CVE-2021-1426: Can Huang and Xinhui Han at Wangxuan Institute of Computer Technology, Peking University, and Lasse Trolle Borup of Danish Cyber Defence CVE-2021-1427: Lockheed Martin Red Team and Antoine Goichot of PwC Luxembourg's Cybersecurity team CVE-2021-1428, CVE-2021-1429, CVE-2021-1430, and CVE-2021-1496: Lockheed Martin Red Team
Legal Disclaimer
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. A 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.


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{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like the following people for reporting these vulnerabilities:\r\n\r\nCVE-2021-1426: Can Huang and Xinhui Han at Wangxuan Institute of Computer Technology, Peking University, and Lasse Trolle Borup of Danish Cyber Defence\r\nCVE-2021-1427: Lockheed Martin Red Team and Antoine Goichot of PwC Luxembourg\u0027s Cybersecurity team\r\nCVE-2021-1428, CVE-2021-1429, CVE-2021-1430, and CVE-2021-1496: Lockheed Martin Red Team"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "Multiple vulnerabilities in the install, uninstall, and upgrade processes of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to hijack DLL or executable files that are used by the application. A successful exploit could allow the attacker to execute arbitrary code on an affected device with SYSTEM privileges. To exploit these vulnerabilities, the attacker must have valid credentials on the Windows system.\r\n\r\nFor more information about these vulnerabilities, see the Details [\"#details\"] section of this advisory.\r\n\r\nCisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.\r\n\r\nThis advisory is available at the following link:\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6 [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6\"]",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "These vulnerabilities affect Cisco devices if they are running a vulnerable release of Cisco AnyConnect Secure Mobility Client for Windows.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by these vulnerabilities.\r\n\r\nCisco has confirmed that these vulnerabilities do not affect the following Cisco products:\r\n\r\nAnyConnect Secure Mobility Client for Linux\r\nAnyConnect Secure Mobility Client for Mac OS\r\nAnyConnect Secure Mobility Client for mobile device operating systems such as iOS, Android, and Universal Windows Platform",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities.\r\n\r\nDetails about the vulnerabilities are as follows.\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows Uninstall Executable Hijacking Vulnerability\r\n\r\nA vulnerability in the uninstall process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device.\r\n\r\nThis vulnerability exists because a temporary file with insecure permissions is created during the uninstall process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCvv43102, CSCvv60844\r\nCVE ID(s): CVE-2021-1426\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.0\r\nCVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijacking Vulnerabilities\r\n\r\nTwo vulnerabilities in the upgrade process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device.\r\n\r\nThese vulnerabilities exist because the application loads a DLL file from a user-writable directory. An attacker could exploit these vulnerabilities by copying a malicious DLL file to a specific directory. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit these vulnerabilities, the attacker must have valid credentials on the Windows system.\r\n\r\nCisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.\r\n\r\nBug ID(s): CSCvw16996, CSCvw17005\r\nCVE ID(s): CVE-2021-1427, CVE-2021-1428\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.0\r\nCVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows Upgrade Executable Hijacking Vulnerability\r\n\r\nA vulnerability in the install process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device.\r\n\r\nThis vulnerability exists because a temporary file with insecure permissions is created during the upgrade process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCvw18527\r\nCVE ID(s): CVE-2021-1429\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.0\r\nCVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijacking Vulnerability\r\n\r\nA vulnerability in the upgrade process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device.\r\n\r\nThis vulnerability exists because a temporary file with insecure permissions is created during the upgrade process. An attacker could exploit this vulnerability by overwriting the temporary file before it is accessed for execution. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCvw18595\r\nCVE ID(s): CVE-2021-1430\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.0\r\nCVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows Install Executable Hijacking Vulnerability\r\n\r\nA vulnerability in the install process of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform an executable hijacking attack on an affected device.\r\n\r\nThis vulnerability exists because the application loads an executable file from a user-writable directory. An attacker could exploit this vulnerability by copying a malicious executable file to a specific directory, which would be executed when the application is installed or upgraded. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCvu77671\r\nCVE ID(s): CVE-2021-1496\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.0\r\nCVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address these vulnerabilities.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers 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\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 the CVE identifiers for the vulnerabilities that are addressed in this advisory. The center column indicates which software releases are affected by the vulnerability. The right column lists the first release that includes the fix for that vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.\r\n    CVE Identifiers Affected Releases of Cisco AnyConnect\r\nSecure Mobility Client for Windows First Fixed Release for This Vulnerability     CVE-2021-1426 Earlier than 4.9.06037 4.9.06037   CVE-2021-1427 Earlier than 4.9.06037 4.9.06037   CVE-2021-1428 Earlier than 4.10.00093 4.10.00093   CVE-2021-1429 Earlier than 4.10.00093 4.10.00093   CVE-2021-1430 Earlier than 4.9.06037 4.9.06037   CVE-2021-1496 Earlier than 4.9.03022 4.9.03022\r\nTo download the software from the Software Center [\"https://software.cisco.com/download/\"] on Cisco.com, do the following:\r\n\r\nClick Browse all.\r\nChoose Security \u003e VPN and Endpoint Security Clients \u003e Cisco VPN Clients \u003e AnyConnect Secure Mobility Client \u003e AnyConnect Secure Mobility Client v4.x.\r\nChoose a release from the left pane of the AnyConnect Secure Mobility Client v4.x page.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/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 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.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like the following people for reporting these vulnerabilities:\r\n\r\nCVE-2021-1426: Can Huang and Xinhui Han at Wangxuan Institute of Computer Technology, Peking University, and Lasse Trolle Borup of Danish Cyber Defence\r\nCVE-2021-1427: Lockheed Martin Red Team and Antoine Goichot of PwC Luxembourg\u0027s Cybersecurity team\r\nCVE-2021-1428, CVE-2021-1429, CVE-2021-1430, and CVE-2021-1496: Lockheed Martin Red Team",
        "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": "Emergency Support:\r\n+1 877 228 7302 (toll-free within North America)\r\n+1 408 525 6532 (International direct-dial)\r\nNon-emergency Support:\r\nEmail: psirt@cisco.com\r\nSupport requests that are received via e-mail are typically acknowledged within 48 hours.",
      "issuing_authority": "Cisco product security incident response is the responsibility of the Cisco Product Security Incident Response Team (PSIRT). The Cisco PSIRT is a dedicated, global team that manages the receipt, investigation, and public reporting of security vulnerability information that is related to Cisco products and networks. The on-call Cisco PSIRT works 24x7 with Cisco customers, independent security researchers, consultants, industry organizations, and other vendors to identify possible security issues with Cisco products and networks.\r\nMore information can be found in Cisco Security Vulnerability Policy available at https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking Vulnerabilities",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6"
      },
      {
        "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": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;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": "Software Center",
        "url": "https://software.cisco.com/download/"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco AnyConnect Secure Mobility Client for Windows DLL and Executable Hijacking Vulnerabilities",
    "tracking": {
      "current_release_date": "2021-05-05T16:00:00+00:00",
      "generator": {
        "date": "2022-10-22T03:09:50+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-anyconnect-code-exec-jR3tWTA6",
      "initial_release_date": "2021-05-05T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2021-05-05T15:28:07+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco AnyConnect Secure Mobility Client",
            "product": {
              "name": "Cisco AnyConnect Secure Mobility Client ",
              "product_id": "CSAFPID-109810"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-1426",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvv60844"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvv43102"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Uninstall Executable Hijack Vulnerability "
    },
    {
      "cve": "CVE-2021-1427",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvw16996"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijack Vulnerability "
    },
    {
      "cve": "CVE-2021-1428",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvw17005"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Upgrade DLL Hijack Vulnerability "
    },
    {
      "cve": "CVE-2021-1429",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvw18527"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Upgrade Executable Hijack Vulnerability "
    },
    {
      "cve": "CVE-2021-1430",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvw18595"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Upgrade Executable Hijack, Creation of Temporary File With Insecure Permissions Vulnerability"
    },
    {
      "cve": "CVE-2021-1496",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvu77671"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-109810"
        ]
      },
      "release_date": "2021-05-05T16:00:00+00:00",
      "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": 7.0,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-109810"
          ]
        }
      ],
      "title": "Cisco AnyConnect Secure Mobility Client for Windows Executable Hijacking Vulnerability"
    }
  ]
}


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