Denial of Service Vulnerability in EmTec ZOC Remote Terminal Emulator
CVE-2021-32198

9.8CRITICAL

Key Information:

Vendor

Emtec

Status
Zoc
Vendor
CVE Published:
6 June 2021

What is CVE-2021-32198?

EmTec ZOC allows remote servers to trigger a denial of service condition by rapidly changing the title of the ZOC window. This issue arises due to the absence of a delay mechanism like usleep during the processing of title changes, leading to excessive calls to SetWindowTextA or SetWindowTextW. As a result, this can cause the Windows graphical user interface to hang, impacting user experience and productivity.

Human OS v1.0:
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References

http://www.emtec.com/downloads/zoc/zoc_changes.txt
x_refsource_MISC
https://pastebin.com/0xhrDvW0
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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