Zohocorp: Security Vulnerabilities
Manage Engine Asset Explorer Agent 1.0.34 listens on port 9000 for incoming commands over HTTPS from Manage Engine Server. The HTTPS certificates are not verified which allows any arbitrary user on the network to send commands over port 9000. While these commands may not be executed (due to authtoken validation), the Asset Explorer agent will reach out to the manage engine server for an HTTP request. During this process, AEAgent.cpp allocates 0x66 bytes using "malloc". This memory is never free-ed in the program, causing a memory leak. Additionally, the instruction sent to aeagent (ie: NEWSCAN, DELTASCAN, etc) is converted to a unicode string, but is never freed. These memory leaks allow a remote attacker to exploit a Denial of Service scenario through repetitively sending these commands to an agent and eventually crashing it the agent due to an out-of-memory condition.
CVSS Score
7.5
EPSS Score
0.028
Published
2021-07-19
Due to the Asset Explorer agent not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer's Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent's HTTP request verifying its authtoken. In AEAgent.cpp, the agent responding back over HTTP is vulnerable to a Heap Overflow if the POST payload response is too large. The POST payload response is converted to Unicode using vswprintf. This is written to a buffer only 0x2000 bytes big. If POST payload is larger, then heap overflow will occur.
CVSS Score
7.5
EPSS Score
0.028
Published
2021-07-19
Due to Manage Engine Asset Explorer Agent 1.0.34 not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer's Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent's HTTP request verifying its authtoken. In httphandler.cpp, the agent reaching out over HTTP is vulnerable to an Integer Overflow, which can be turned into a Heap Overflow allowing for remote code execution as NT AUTHORITY/SYSTEM on the agent machine. The Integer Overflow occurs when receiving POST response from the Manage Engine server, and the agent calling "HttpQueryInfoW" in order to get the "Content-Length" size from the incoming POST request. This size is taken, but multiplied to a larger amount. If an attacker specifies a Content-Length size of 1073741823 or larger, this integer arithmetic will wrap the value back around to smaller integer, then calls "calloc" with this size to allocate memory. The following API "InternetReadFile" will copy the POST data into this buffer, which will be too small for the contents, and cause heap overflow.
CVSS Score
9.8
EPSS Score
0.019
Published
2021-07-19
Zoho ManageEngine ADManager Plus before 7110 allows remote code execution.
CVSS Score
9.8
EPSS Score
0.068
Published
2021-07-17
Zoho ManageEngine ADManager Plus before 7110 allows reflected XSS.
CVSS Score
6.1
EPSS Score
0.039
Published
2021-07-17
Zoho ManageEngine ADManager Plus before 7110 allows stored XSS.
CVSS Score
6.1
EPSS Score
0.039
Published
2021-07-17
Zoho ManageEngine ADSelfService Plus before 6104, in rare situations, allows attackers to obtain sensitive information about the password-sync database application.
CVSS Score
5.9
EPSS Score
0.012
Published
2021-07-02
Zoho ManageEngine Applications Manager before 15130 is vulnerable to Stored XSS while importing malicious user details (e.g., a crafted user name) from AD.
CVSS Score
5.4
EPSS Score
0.246
Published
2021-07-01
Zoho ManageEngine ServiceDesk Plus MSP before 10521 allows an attacker to access internal data.
CVSS Score
7.5
EPSS Score
0.1
Published
2021-06-29
Zoho ManageEngine ServiceDesk Plus MSP before 10522 is vulnerable to Information Disclosure.
CVSS Score
7.5
EPSS Score
0.049
Published
2021-06-29