CVE-2021-33586: Medium severity inspircd inspircd vulnerability

Published 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.

Affected Software

6 affected componentsFixes available
inspircd inspircd>=3.8.0<3.10.0
alpine/inspircd>=3.8.0<3.10.0-r0
3.10.0-r0
alpine/inspircd>=3.8.0<3.10.0-r0
3.10.0-r0
alpine/inspircd>=3.8.0<3.10.0-r0
3.10.0-r0
alpine/inspircd>=3.8.0<3.10.0-r0
3.10.0-r0
alpine/inspircd>=3.8.0<3.10.0-r0
3.10.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade alpine/inspircd to a version that resolves this vulnerability.

    Fixed in 3.10.0-r0

Event History

May 27, 2021
CVE Published
via MITRE·05:00 AM
Data Sourced
via MITRE·05:00 AM
Description
Data Sourced
via NVD·05:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·05:15 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

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.

2

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.

3

How do I fix CVE-2021-33586?

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

4

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.

5

Is there a workaround for CVE-2021-33586?

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

Company

Resources

Contact

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