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CVE-2021-30116— Kaseya VSA 输入验证错误漏洞

CVSS 10.0 · Critical KEV · ランサムウェア EPSS 54.07% · P98
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I. CVE-2021-30116の基本情報

脆弱性情報
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脆弱性タイトル
Unauthenticated credential leak and business logic flaw in Kaseya VSA <= v9.5.6
ソース: NVD (National Vulnerability Database)
脆弱性説明
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.
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
N/A
ソース: NVD (National Vulnerability Database)
脆弱性タイトル
Kaseya VSA 输入验证错误漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
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。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)

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影響を受ける製品

ベンダープロダクト影響を受けるバージョンCPE購読
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II. CVE-2021-30116の公開POC

#POC説明ソースリンクShenlongリンク
1Kaseya 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.yamlPOC詳細
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III. CVE-2021-30116のインテリジェンス情報

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Same Patch Batch · n/a · 2021-07-09 · 49 CVEs total

CVE-2021-301209.9 CRITICAL2FA bypass in Kaseya VSA <= v9.5.6
CVE-2021-301189.8 CRITICALUnauthenticated Remote Code Execution in Kaseya VSA < v9.5.5
CVE-2021-301179.8 CRITICALAuthenticated SQL injection in Kaseya VSA < v9.5.6
CVE-2021-234058.3 HIGHSQL Injection
CVE-2021-302017.5 HIGHUnauthenticated XML External Entity vulnerability in Kaseya VSA < v9.5.6
CVE-2021-301216.5 MEDIUM(Semi-)Authenticated local file inclusion in Kaseya VSA < v9.5.6
CVE-2021-301195.4 MEDIUMAuthenticated Authenticated reflective XSS in Kaseya VSA <= v9.5.6
CVE-2020-35986Rukovoditel 跨站脚本漏洞
CVE-2020-25875Codoforum 跨站脚本漏洞
CVE-2020-25392CSZ CMS 跨站脚本漏洞
CVE-2020-21333PublicCMS 跨站脚本漏洞
CVE-2020-35987Rukovoditel 跨站脚本漏洞
CVE-2021-35358Dotcms dotCMS 跨站脚本漏洞
CVE-2021-35361Dotcms dotCMS 跨站脚本漏洞
CVE-2021-35360Dotcms dotCMS 跨站脚本漏洞
CVE-2021-36371Emissary-Ingress 信任管理问题漏洞
CVE-2021-33214Hms Networks eCatcher 安全漏洞
CVE-2021-33792Foxit Reader 和 Foxit PhantomPDF 缓冲区错误漏洞
CVE-2021-33795Foxit Reader和Foxit PhantomPDF 安全漏洞
CVE-2021-27038Autodesk Design Review 安全漏洞

Showing 20 of 49 CVEs. View all on vendor page →

IV. 関連脆弱性

同じ製品: n/a
同じベンダー: n/a

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