Vulnerability-Lookup

CNVD-2022-22270

Vulnerability from cnvd - Published: 2022-03-24

Title

UltraVNC存在未明漏洞

Description

UltraVNC是一款用于Windows平台的开源远程终端控制软件。 UltraVNC 1.3.8.0 之前的版本的DSM插件存在安全漏洞，本地经过身份验证的攻击者可利用该漏洞在易受攻击的系统上实现本地权限提升 (LPE)。

Severity

高

Patch Name

UltraVNC存在未明漏洞的补丁

Patch Description

UltraVNC是一款用于Windows平台的开源远程终端控制软件。 UltraVNC 1.3.8.0 之前的版本的DSM插件存在安全漏洞，本地经过身份验证的攻击者可利用该漏洞在易受攻击的系统上实现本地权限提升 (LPE)。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g

Reference

https://cxsecurity.com/cveshow/CVE-2022-24750/

Impacted products

Name
UltraVNC UltraVNC <1.3.8.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-24750"
    }
  },
  "description": "UltraVNC\u662f\u4e00\u6b3e\u7528\u4e8eWindows\u5e73\u53f0\u7684\u5f00\u6e90\u8fdc\u7a0b\u7ec8\u7aef\u63a7\u5236\u8f6f\u4ef6\u3002\n\nUltraVNC 1.3.8.0 \u4e4b\u524d\u7684\u7248\u672c\u7684DSM\u63d2\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u672c\u5730\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u6613\u53d7\u653b\u51fb\u7684\u7cfb\u7edf\u4e0a\u5b9e\u73b0\u672c\u5730\u6743\u9650\u63d0\u5347 (LPE)\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-22270",
  "openTime": "2022-03-24",
  "patchDescription": "UltraVNC\u662f\u4e00\u6b3e\u7528\u4e8eWindows\u5e73\u53f0\u7684\u5f00\u6e90\u8fdc\u7a0b\u7ec8\u7aef\u63a7\u5236\u8f6f\u4ef6\u3002\r\n\r\nUltraVNC 1.3.8.0 \u4e4b\u524d\u7684\u7248\u672c\u7684DSM\u63d2\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u672c\u5730\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u6613\u53d7\u653b\u51fb\u7684\u7cfb\u7edf\u4e0a\u5b9e\u73b0\u672c\u5730\u6743\u9650\u63d0\u5347 (LPE)\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": "UltraVNC\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "UltraVNC UltraVNC \u003c1.3.8.0"
  },
  "referenceLink": "https://cxsecurity.com/cveshow/CVE-2022-24750/",
  "serverity": "\u9ad8",
  "submitTime": "2022-03-14",
  "title": "UltraVNC\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2022-24750 (GCVE-0-2022-24750)

Vulnerability from cvelistv5 – Published: 2022-03-10 00:00 – Updated: 2025-04-23 18:55

Title

Low privilege user is able to exploit the service and gain SYSTEM privileges in UltraVNC server

Summary

UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:55 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/ultravnc/UltraVNC/security/adv…
https://github.com/ultravnc/UltraVNC/commit/36a31…
https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE

Impacted products

1 product

Vendor	Product	Version
ultravnc	UltraVNC	Affected: < 1.3.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T04:20:50.151Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-24750",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:55:15.823869Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:55:50.634Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "UltraVNC",
          "vendor": "ultravnc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.8.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-11T00:00:00.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g"
        },
        {
          "url": "https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352"
        },
        {
          "url": "https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE"
        }
      ],
      "source": {
        "advisory": "GHSA-3mvp-cp5x-vj5g",
        "discovery": "UNKNOWN"
      },
      "title": "Low privilege user is able to exploit the service and gain SYSTEM privileges in UltraVNC server"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-24750",
    "datePublished": "2022-03-10T00:00:00.000Z",
    "dateReserved": "2022-02-10T00:00:00.000Z",
    "dateUpdated": "2025-04-23T18:55:50.634Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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CNVD-2022-22270

CVE-2022-24750 (GCVE-0-2022-24750)

Tags

Sightings

Nomenclature

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