CVE-2021-30120— 2FA bypass in Kaseya VSA <= v9.5.6
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I. Basic Information for CVE-2021-30120
Vulnerability Information
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Vulnerability Title
2FA bypass in Kaseya VSA <= v9.5.6
Source: NVD (National Vulnerability Database)
Vulnerability Description
Kaseya VSA before 9.5.7 allows attackers to bypass the 2FA requirement. The need to use 2FA for authentication in enforce client-side instead of server-side and can be bypassed using a local proxy. Thus rendering 2FA useless. Detailed description --- During the login process, after the user authenticates with username and password, the server sends a response to the client with the booleans MFARequired and MFAEnroled. If the attacker has obtained a password of a user and used an intercepting proxy (e.g. Burp Suite) to change the value of MFARequered from True to False, there is no prompt for the second factor, but the user is still logged in.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Kaseya VSA 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kaseya VSA是美国Kaseya公司的托管服务提供商 (MSP) 常用来管理客户网络的RMM（远程监控和管理）软件。 Kaseya VSA存在安全漏洞，该漏洞源于 2FA 绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
II. Public POCs for CVE-2021-30120
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://csrit.divd.nl/CVE-2021-30120x_refsource_CONFIRM
- https://csrit.divd.nl/DIVD-2021-00011x_refsource_CONFIRM
- https://csirt.divd.nl/2021/07/07/Kaseya-Limited-Disclosure/x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-30120
Same Patch Batch · n/a · 2021-07-09 · 49 CVEs total
| CVE-2021-30116 | 10.0 CRITICAL | Unauthenticated credential leak and business logic flaw in Kaseya VSA <= v9.5.6 |
| CVE-2021-30118 | 9.8 CRITICAL | Unauthenticated Remote Code Execution in Kaseya VSA < v9.5.5 |
| CVE-2021-30117 | 9.8 CRITICAL | Authenticated SQL injection in Kaseya VSA < v9.5.6 |
| CVE-2021-23405 | 8.3 HIGH | SQL Injection |
| CVE-2021-30201 | 7.5 HIGH | Unauthenticated XML External Entity vulnerability in Kaseya VSA < v9.5.6 |
| CVE-2021-30121 | 6.5 MEDIUM | (Semi-)Authenticated local file inclusion in Kaseya VSA < v9.5.6 |
| CVE-2021-30119 | 5.4 MEDIUM | Authenticated Authenticated reflective XSS in Kaseya VSA <= v9.5.6 |
| CVE-2020-35987 | Rukovoditel 跨站脚本漏洞 | |
| CVE-2020-25875 | Codoforum 跨站脚本漏洞 | |
| CVE-2020-25876 | Codoforum 跨站脚本漏洞 | |
| CVE-2020-25394 | moziloCMS 跨站脚本漏洞 | |
| CVE-2020-21333 | PublicCMS 跨站脚本漏洞 | |
| CVE-2021-35358 | Dotcms dotCMS 跨站脚本漏洞 | |
| CVE-2021-35361 | Dotcms dotCMS 跨站脚本漏洞 | |
| CVE-2021-35360 | Dotcms dotCMS 跨站脚本漏洞 | |
| CVE-2021-36371 | Emissary-Ingress 信任管理问题漏洞 | |
| CVE-2021-33214 | Hms Networks eCatcher 安全漏洞 | |
| CVE-2021-33792 | Foxit Reader 和 Foxit PhantomPDF 缓冲区错误漏洞 | |
| CVE-2021-33795 | Foxit Reader和Foxit PhantomPDF 安全漏洞 | |
| CVE-2021-27038 | Autodesk Design Review 安全漏洞 |
Showing top 20 of 49 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-30120
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