CVE-2021-30116— Kaseya VSA 输入验证错误漏洞
公开利用映射 1
Nuclei · 1 CVE-2021-30116.yaml [template]
已观察到在野利用 cisa_kev · confirmed
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一、 漏洞 CVE-2021-30116 基础信息
漏洞信息
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Vulnerability Title
Unauthenticated credential leak and business logic flaw in Kaseya VSA <= v9.5.6
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
Kaseya VSA before 9.5.7 allows credential disclosure, as exploited in the wild in July 2021. By default Kaseya VSA on premise offers a download page where the clients for the installation can be downloaded. The default URL for this page is https://x.x.x.x/dl.asp When an attacker download a client for Windows and installs it, the file KaseyaD.ini is generated (C:\Program Files (x86)\Kaseya\XXXXXXXXXX\KaseyaD.ini) which contains an Agent_Guid and AgentPassword This Agent_Guid and AgentPassword can be used to log in on dl.asp (https://x.x.x.x/dl.asp?un=840997037507813&pw=113cc622839a4077a84837485ced6b93e440bf66d44057713cb2f95e503a06d9) This request authenticates the client and returns a sessionId cookie that can be used in subsequent attacks to bypass authentication. Security issues discovered --- * Unauthenticated download page leaks credentials * Credentials of agent software can be used to obtain a sessionId (cookie) that can be used for services not intended for use by agents * dl.asp accepts credentials via a GET request * Access to KaseyaD.ini gives an attacker access to sufficient information to penetrate the Kaseya installation and its clients. Impact --- Via the page /dl.asp enough information can be obtained to give an attacker a sessionId that can be used to execute further (semi-authenticated) attacks against the system.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Kaseya VSA 输入验证错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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存在输入验证错误漏洞，该漏洞允许远程攻击者可利用该漏洞危及受影响的系统。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| - | n/a | n/a | - |
二、漏洞 CVE-2021-30116 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | Kaseya VSA before 9.5.7 allows credential disclosure, as exploited in the wild in July 2021. By default Kaseya VSA on premise offers a download page where the clients for the installation can be downloaded. The default URL for this page is https://x.x.x.x/dl.asp When an attacker download a client for Windows and installs it, the file KaseyaD.ini is generated (C:\Program Files (x86)\Kaseya\XXXXXXXXXX\KaseyaD.ini) which contains an Agent_Guid and AgentPassword This Agent_Guid and AgentPassword can be used to log in on dl.asp (https://x.x.x.x/dl.asp?un=840997037507813&pw=113cc622839a4077a84837485ced6b93e440bf66d44057713cb2f95e503a06d9) This request authenticates the client and returns a sessionId cookie that can be used in subsequent attacks to bypass authentication. Security issues discovered --- * Unauthenticated download page leaks credentials * Credentials of agent software can be used to obtain a sessionId (cookie) that can be used for services not intended for use by agents * dl.asp accepts credentials via a GET request * Access to KaseyaD.ini gives an attacker access to sufficient information to penetrate the Kaseya installation and its clients. Impact --- Via the page /dl.asp enough information can be obtained to give an attacker a sessionId that can be used to execute further (semi-authenticated) attacks against the system. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-30116.yaml | POC详情 |
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CVE-2021-30116 安全博客文章 (1)
CVE-2021-30116 其他参考 (3)
同批安全公告 · n/a · 2021-07-09 · 共 49 条
| CVE-2021-30120 | 9.9 CRITICAL | Kaseya VSA 安全漏洞 |
| CVE-2021-30118 | 9.8 CRITICAL | Kaseya VSA RMM 代码问题漏洞 |
| CVE-2021-30117 | 9.8 CRITICAL | Kaseya VSA SQL注入漏洞 |
| CVE-2021-23405 | 8.3 HIGH | Pimcore SQL注入漏洞 |
| CVE-2021-30201 | 7.5 HIGH | Kaseya VSA 代码问题漏洞 |
| CVE-2021-30121 | 6.5 MEDIUM | Kaseya VSA 代码注入漏洞 |
| CVE-2021-30119 | 5.4 MEDIUM | Kaseya VSA 跨站脚本漏洞 |
| CVE-2020-35986 | Rukovoditel 跨站脚本漏洞 | |
| CVE-2020-25875 | Codoforum 跨站脚本漏洞 | |
| CVE-2020-25392 | CSZ CMS 跨站脚本漏洞 | |
| CVE-2020-21333 | PublicCMS 跨站脚本漏洞 | |
| CVE-2020-35987 | Rukovoditel 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 |
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IV. Related Vulnerabilities
V. Comments for CVE-2021-30116
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