Kaseya VSA prior to 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 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 (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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
kaseya vsa agent |
||
kaseya vsa server |
So close, and yet so far
One of the vulnerabilities in Kaseya's IT management software VSA that was exploited by miscreants to infect up to 1,500 businesses with ransomware was reported to the vendor in April – and the patch just wasn't ready in time. As we've covered this week, deployments of Kaseya's flagship Virtual System Administrator (VSA) product were hijacked at the start of the month to inject REvil extortionware into networks around the world. Kaspersky Lab said it saw evidence of 5,000 infection attempts in...
Vulmon