CVE-2021-42084
First published: Thu Oct 07 2021(Updated: )
An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zammad Zammad | <4.1.1 | |
| <4.1.1 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-42084?
CVE-2021-42084 is a vulnerability in Zammad before version 4.1.1 that allows an attacker with valid agent credentials to cause a denial of service (DoS) by creating an endless loop.
How does CVE-2021-42084 affect Zammad?
CVE-2021-42084 affects Zammad versions prior to 4.1.1 and can be exploited by an attacker who has valid agent credentials.
What is the severity of CVE-2021-42084?
The severity of CVE-2021-42084 is medium (CVSS score of 6.5).
How can an attacker exploit CVE-2021-42084?
An attacker with valid agent credentials can exploit CVE-2021-42084 by sending a series of crafted requests that cause an endless loop.
How can I fix CVE-2021-42084?
To fix CVE-2021-42084, you need to update Zammad to version 4.1.1 or later.
- collector/nvd-index
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/weakness
- agent/references
- agent/description
- agent/first-publish-date
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/last-modified-date
- agent/author
- agent/softwarecombine
- agent/tags
- agent/event
- vendor/zammad
- canonical/zammad zammad