Vulnerability-Lookup

CNVD-2020-14232

Vulnerability from cnvd - Published: 2020-02-26

Title

TeamViewer存在未明漏洞

Description

TeamViewer是德国TeamViewer公司的一套用于远程控制、桌面共享和文件传输的软件。 TeamViewer Desktop 14.7.1965及之前版本中存在安全漏洞，该漏洞源于不同用户在安装过程中使用了相同的密钥。攻击者可利用该漏洞绕过远程登录访问控制。

Severity

中

Formal description

目前厂商尚未提供相关漏洞补丁链接，请关注厂商主页随时更新： https://www.teamviewer.cn/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-18988

Impacted products

Name
TeamViewer TeamViewer Desktop <=14.7.1965

Show details on source website

JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-18988"
    }
  },
  "description": "TeamViewer\u662f\u5fb7\u56fdTeamViewer\u516c\u53f8\u7684\u4e00\u5957\u7528\u4e8e\u8fdc\u7a0b\u63a7\u5236\u3001\u684c\u9762\u5171\u4eab\u548c\u6587\u4ef6\u4f20\u8f93\u7684\u8f6f\u4ef6\u3002\n\nTeamViewer Desktop 14.7.1965\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e0d\u540c\u7528\u6237\u5728\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u4e86\u76f8\u540c\u7684\u5bc6\u94a5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u8fdc\u7a0b\u767b\u5f55\u8bbf\u95ee\u63a7\u5236\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u76f8\u5173\u6f0f\u6d1e\u8865\u4e01\u94fe\u63a5\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u968f\u65f6\u66f4\u65b0\uff1a\r\nhttps://www.teamviewer.cn/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-14232",
  "openTime": "2020-02-26",
  "products": {
    "product": "TeamViewer TeamViewer Desktop \u003c=14.7.1965"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18988",
  "serverity": "\u4e2d",
  "submitTime": "2020-02-10",
  "title": "TeamViewer\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2019-18988 (GCVE-0-2019-18988)

Vulnerability from cvelistv5 – Published: 2020-02-07 15:09 – Updated: 2025-10-21 23:35

Summary

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the current version of the product. If an attacker were to know this key, they could decrypt protect information stored in the registry or configuration files of TeamViewer. With versions before v9.x , this allowed for attackers to decrypt the Unattended Access password to the system (which allows for remote login to the system as well as headless file browsing). The latest version still uses the same key for OptionPasswordAES but appears to have changed how the Unattended Access password is stored. While in most cases an attacker requires an existing session on a system, if the registry/configuration keys were stored off of the machine (such as in a file share or online), an attacker could then decrypt the required password to login to the system.

Severity

7 (High)


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

SSVC

Exploitation: active Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-04 20:33 UTC

CWE

n/a
CWE-521 - Weak Password Requirements

Assigner

mitre mitre root Scorecard

References

5 references

URL	Tags
https://community.teamviewer.com/t5/Knowledge-Bas…	x_refsource_MISC
https://whynotsecurity.com/blog/teamviewer/	x_refsource_MISC
https://twitter.com/Blurbdust/status/122421268259…	x_refsource_MISC
https://community.teamviewer.com/t5/Announcements…	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Show details on NVD website

JSON

To clipboard

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          },
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            "tags": [
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            ],
            "url": "https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264"
          }
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              "availabilityImpact": "HIGH",
              "baseScore": 7,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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                "timestamp": "2025-02-04T20:33:26.822954Z",
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          },
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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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2020-14232

CVE-2019-18988 (GCVE-0-2019-18988)

Tags

Sightings

Nomenclature

Related by attack behaviour