What is CVE-2021-28994?

CVE-2021-28994 is a vulnerability in kopano-ical (formerly zarafa-ical) in Kopano Groupware Core, allowing memory exhaustion via long HTTP headers.

Which software is affected by CVE-2021-28994?

Kopano Groupware Core versions 8.7.16 through 11.0.1 and Zarafa versions 6.30.x through 7.2.x are affected by CVE-2021-28994.

How severe is CVE-2021-28994?

CVE-2021-28994 has a severity rating of 7.5 (high).

How can I fix CVE-2021-28994?

To fix CVE-2021-28994, it is recommended to upgrade to a patched version of Kopano Groupware Core or Zarafa.

Where can I find more information about CVE-2021-28994?

You can find more information about CVE-2021-28994 on the following references: [1](http://www.openwall.com/lists/oss-security/2021/04/01/1), [2](http://www.openwall.com/lists/oss-security/2021/04/25/1), [3](https://www.openwall.com/lists/oss-security/2021/03/19/6).

Vulnerability/
CVE-2021-28994

high

7.5

CWE

770

31/3/2021

3/8/2024

CVE-2021-28994

First published: Wed Mar 31 2021(Updated: )

kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1 and Zarafa 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Kopano Groupware Core	<=8.7.16
Kopano Groupware Core	>=9.0.0<=9.1.0
Kopano Groupware Core	>=10.0.0<=10.0.7
Kopano Groupware Core	>=11.0.0<=11.0.1
Zarafa Zarafa	>=6.30.0<=7.2.6

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Reference Links

Frequently Asked Questions

What is CVE-2021-28994?
CVE-2021-28994 is a vulnerability in kopano-ical (formerly zarafa-ical) in Kopano Groupware Core, allowing memory exhaustion via long HTTP headers.
Which software is affected by CVE-2021-28994?
Kopano Groupware Core versions 8.7.16 through 11.0.1 and Zarafa versions 6.30.x through 7.2.x are affected by CVE-2021-28994.
How severe is CVE-2021-28994?
CVE-2021-28994 has a severity rating of 7.5 (high).
How can I fix CVE-2021-28994?
To fix CVE-2021-28994, it is recommended to upgrade to a patched version of Kopano Groupware Core or Zarafa.
Where can I find more information about CVE-2021-28994?
You can find more information about CVE-2021-28994 on the following references: [1](http://www.openwall.com/lists/oss-security/2021/04/01/1), [2](http://www.openwall.com/lists/oss-security/2021/04/25/1), [3](https://www.openwall.com/lists/oss-security/2021/03/19/6).

collector/nvd-index
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/author
agent/references
agent/weakness
agent/severity
agent/last-modified-date
agent/tags
agent/event
agent/first-publish-date
agent/description
vendor/kopano
canonical/kopano groupware core
version/kopano groupware core/8.7.16
version/kopano groupware core/9.0.0
version/kopano groupware core/9.1.0
version/kopano groupware core/10.0.0
version/kopano groupware core/10.0.7
version/kopano groupware core/11.0.0
version/kopano groupware core/11.0.1
vendor/zarafa
canonical/zarafa zarafa
version/zarafa zarafa/6.30.0
version/zarafa zarafa/7.2.6

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