What is the severity of CVE-2021-33586?

CVE-2021-33586 is considered a moderate severity vulnerability due to its potential for disrupting service via memory access issues.

Who is affected by CVE-2021-33586?

CVE-2021-33586 affects all users of InspIRCd from versions 3.8.0 to 3.9.x before 3.10.0.

How do I fix CVE-2021-33586?

To fix CVE-2021-33586, you should upgrade to InspIRCd version 3.10.0 or later.

What kind of issue does CVE-2021-33586 represent?

CVE-2021-33586 represents an issue that allows any user to access recently deallocated memory through a malformed PONG message.

Is there a workaround for CVE-2021-33586?

There is no documented workaround for CVE-2021-33586, and upgrading is the advised solution.

Vulnerability/
CVE-2021-33586

medium

4.3

CWE

732

27/5/2021

3/8/2024

CVE-2021-33586

First published: Thu May 27 2021(Updated: )

InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
InspIRCd	>=3.8.0<3.10.0

Remedy

https://docs.inspircd.org/security/2021-01/

Remedy

https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4d

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-33586?
CVE-2021-33586 is considered a moderate severity vulnerability due to its potential for disrupting service via memory access issues.
Who is affected by CVE-2021-33586?
CVE-2021-33586 affects all users of InspIRCd from versions 3.8.0 to 3.9.x before 3.10.0.
How do I fix CVE-2021-33586?
To fix CVE-2021-33586, you should upgrade to InspIRCd version 3.10.0 or later.
What kind of issue does CVE-2021-33586 represent?
CVE-2021-33586 represents an issue that allows any user to access recently deallocated memory through a malformed PONG message.
Is there a workaround for CVE-2021-33586?
There is no documented workaround for CVE-2021-33586, and upgrading is the advised solution.

agent/type
agent/remedy
collector/mitre-cve
source/MITRE
agent/weakness
agent/references
agent/severity
agent/last-modified-date
agent/description
agent/first-publish-date
agent/author
agent/event
agent/source
agent/tags
agent/softwarecombine
collector/nvd-index
agent/software-canonical-lookup-request
vendor/inspircd
canonical/inspircd
version/inspircd/3.8.0

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Contact

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Frequently Asked Questions

What is the severity of CVE-2021-33586?
CVE-2021-33586 is considered a moderate severity vulnerability due to its potential for disrupting service via memory access issues.
Who is affected by CVE-2021-33586?
CVE-2021-33586 affects all users of InspIRCd from versions 3.8.0 to 3.9.x before 3.10.0.
How do I fix CVE-2021-33586?
To fix CVE-2021-33586, you should upgrade to InspIRCd version 3.10.0 or later.
What kind of issue does CVE-2021-33586 represent?
CVE-2021-33586 represents an issue that allows any user to access recently deallocated memory through a malformed PONG message.
Is there a workaround for CVE-2021-33586?
There is no documented workaround for CVE-2021-33586, and upgrading is the advised solution.