Exploitation ongoing with high activity in latest observed window (1 mentions)
Recommended action window: Immediate (within 24h)
NVD 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.
Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2021-11-17. Apply updates per vendor instructions.
Priority
LOW
Exploitation
ACTIVE
PoC
YES
Patch
NONE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2/ Recent examples include the Kaseya VSA attack, which leveraged a zero-day vulnerability, CVE-2021-30116, affecting 1,500 businesses. #ThreatIntel #DataBreach
Post summary
The post confirms that CVE‑2021‑30116 was actively exploited in the Kaseya VSA attack, impacting 1,500 businesses.
🚨 [HIGH] Active exploitation detected: CVE-2021-30116 Exploit in the wild confirmed for CVE-2021-30116 (CVSS null). Kaseya Virtual System/Server Administrator (VSA) contains an information disclosure vuln... 🔗 http://ctiwatch.cloud/alerts #ZeroDay #ExploitInWild #CyberSecurity
Post summary
The post reports that CVE-2021-30116 is actively exploited in the wild against Kaseya VSA, exposing an information disclosure flaw. No PoC, tool, or patch details are provided.
2 of 2 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | kaseya | vsa_agent | - | - | - |
| App | kaseya | vsa_server | - | - | - |