cnvd - cnvd-2021-05520

cnvd-2021-05520

Vulnerability from cnvd

Title: Cisco AnyConnect Secure Mobility Client for Windows代码问题漏洞（CNVD-2021-05520）

Description:

Cisco AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。

Cisco AnyConnect Secure Mobility Client for Windows 存在安全漏洞，该漏洞源于应用程序在运行时加载的资源验证不足。攻击者可利用该漏洞在系统的特定路径中插入配置文件，从而导致加载恶意DLL文件。

Severity: 高

Patch Name: Cisco AnyConnect Secure Mobility Client for Windows代码问题漏洞（CNVD-2021-05520）的补丁

Patch Description:

Cisco AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。

Cisco AnyConnect Secure Mobility Client for Windows 存在安全漏洞，该漏洞源于应用程序在运行时加载的资源验证不足。攻击者可利用该漏洞在系统的特定路径中插入配置文件，从而导致加载恶意DLL文件。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-1237

Impacted products

Name
Cisco Cisco AnyConnect Secure Mobility Client for Windows <4.9.04043

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1237"
    }
  },
  "description": "Cisco AnyConnect Secure Mobility Client for Windows\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u57fa\u4e8eWindows\u5e73\u53f0\u7684\u53ef\u901a\u8fc7\u4efb\u4f55\u8bbe\u5907\u5b89\u5168\u8bbf\u95ee\u7f51\u7edc\u548c\u5e94\u7528\u7684\u5b89\u5168\u79fb\u52a8\u5ba2\u6237\u7aef\u3002\n\nCisco AnyConnect Secure Mobility Client for Windows \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5e94\u7528\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u52a0\u8f7d\u7684\u8d44\u6e90\u9a8c\u8bc1\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7cfb\u7edf\u7684\u7279\u5b9a\u8def\u5f84\u4e2d\u63d2\u5165\u914d\u7f6e\u6587\u4ef6\uff0c\u4ece\u800c\u5bfc\u81f4\u52a0\u8f7d\u6076\u610fDLL\u6587\u4ef6\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-05520",
  "openTime": "2021-01-25",
  "patchDescription": "Cisco AnyConnect Secure Mobility Client for Windows\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u57fa\u4e8eWindows\u5e73\u53f0\u7684\u53ef\u901a\u8fc7\u4efb\u4f55\u8bbe\u5907\u5b89\u5168\u8bbf\u95ee\u7f51\u7edc\u548c\u5e94\u7528\u7684\u5b89\u5168\u79fb\u52a8\u5ba2\u6237\u7aef\u3002\r\n\r\nCisco AnyConnect Secure Mobility Client for Windows \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5e94\u7528\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u52a0\u8f7d\u7684\u8d44\u6e90\u9a8c\u8bc1\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7cfb\u7edf\u7684\u7279\u5b9a\u8def\u5f84\u4e2d\u63d2\u5165\u914d\u7f6e\u6587\u4ef6\uff0c\u4ece\u800c\u5bfc\u81f4\u52a0\u8f7d\u6076\u610fDLL\u6587\u4ef6\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Cisco AnyConnect Secure Mobility Client for Windows\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-05520\uff09 \u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Cisco AnyConnect Secure Mobility Client for Windows \u003c4.9.04043"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1237",
  "serverity": "\u9ad8",
  "submitTime": "2021-01-18",
  "title": "Cisco AnyConnect Secure Mobility Client for Windows\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-05520\uff09"
}

CVE-2021-1237 (GCVE-0-2021-1237)

Vulnerability from cvelistv5

Published

2021-01-13 21:17

Modified

2024-11-12 20:48

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-427

Summary

A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco AnyConnect Secure Mobility Client	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:02:56.296Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210113 Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1237",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:34:23.969087Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-12T20:48:12.060Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco AnyConnect Secure Mobility Client",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-01-13T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-427",
              "description": "CWE-427",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-13T21:17:08",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20210113 Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf"
        }
      ],
      "source": {
        "advisory": "cisco-sa-anyconnect-dll-injec-pQnryXLf",
        "defect": [
          [
            "CSCvw16727"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2021-01-13T16:00:00",
          "ID": "CVE-2021-1237",
          "STATE": "PUBLIC",
          "TITLE": "Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco AnyConnect Secure Mobility Client",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cisco"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
          }
        ],
        "impact": {
          "cvss": {
            "baseScore": "7.8",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-427"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20210113 Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-anyconnect-dll-injec-pQnryXLf",
          "defect": [
            [
              "CSCvw16727"
            ]
          ],
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2021-1237",
    "datePublished": "2021-01-13T21:17:08.874050Z",
    "dateReserved": "2020-11-13T00:00:00",
    "dateUpdated": "2024-11-12T20:48:12.060Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted