CVE-2021-20108
Quick assessment
Affected
n/a Manage Engine Asset Explorer Agent
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ZOHO ManageEngine AssetExplorer是美国卓豪（ZOHO）公司的一套资产管理软件。该软件提供资产跟踪、IT资产的扫描和资产所有权的跟踪等功能。 ZOHO ManageEngine AssetExplorer Agent 1.0.34版本存在安全漏洞，该漏洞源于程序在9000端口上监听来自Manage Engine Server的HTTPS传入命令时HTTPS证书不被验证，这允许网络上的任意用户通过9000端口发送命令。
Possible ATT&CK Techniques 2 AI
T1071 · Application Layer Protocol T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-20108
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ZOHO ManageEngine AssetExplorer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZOHO ManageEngine AssetExplorer是美国卓豪（ZOHO）公司的一套资产管理软件。该软件提供资产跟踪、IT资产的扫描和资产所有权的跟踪等功能。 ZOHO ManageEngine AssetExplorer Agent 1.0.34版本存在安全漏洞，该漏洞源于程序在9000端口上监听来自Manage Engine Server的HTTPS传入命令时HTTPS证书不被验证，这允许网络上的任意用户通过9000端口发送命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | Manage Engine Asset Explorer Agent | 1.0.34 | - |
|
II. Public POCs for CVE-2021-20108
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-20108 (1)
-
https://www.tenable.com/security/research/tra-2021-29 x_refsource_MISC
Same Patch Batch · n/a · 2021-07-19 · 35 CVEs total
| CVE-2021-33027 | Sylabs Singularity 安全特征问题漏洞 | |
| CVE-2021-20109 | ZOHO ManageEngine AssetExplorer 信任管理问题漏洞 | |
| CVE-2021-35449 | Lexmark Universal Print Driver 安全漏洞 | |
| CVE-2021-34817 | Etherpad 跨站脚本漏洞 | |
| CVE-2021-32014 | SheetJS Pro 资源管理错误漏洞 | |
| CVE-2021-32013 | SheetJS Pro 资源管理错误漏洞 | |
| CVE-2021-32012 | SheetJS Pro 资源管理错误漏洞 | |
| CVE-2021-31216 | Siren Investigate 代码问题漏洞 | |
| CVE-2021-3279 | Fortics sz.chat 跨站脚本漏洞 | |
| CVE-2021-20110 | ZOHO ManageEngine AssetExplorer 信任管理问题漏洞 | |
| CVE-2021-33501 | Overwolf 跨站脚本漏洞 | |
| CVE-2020-36421 | Arm Mbed TLS 安全漏洞 | |
| CVE-2020-36422 | Arm Mbed TLS 安全漏洞 | |
| CVE-2020-36423 | Arm Mbed TLS 安全漏洞 | |
| CVE-2020-36424 | Arm Mbed TLS 安全漏洞 | |
| CVE-2020-36425 | ARM mbed TLS 信任管理问题漏洞 | |
| CVE-2020-36426 | ARM mbed TLS 缓冲区错误漏洞 | |
| CVE-2020-22650 | AlienVault Ossim 安全漏洞 | |
| CVE-2021-31590 | PwnDoc 安全漏洞 | |
| CVE-2021-34618 | Aruba Networks Instant 资源管理错误漏洞 |
Showing top 20 of 35 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-20108
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