CVE-2021-40516: High severity WeeChat WeeChat vulnerability

Published Sep 5, 2021
·
Updated

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.

Affected Software

2 affected components
WeeChat WeeChat>=0.4.1<3.2.1
Debian Debian Linux=10.0

Event History

Sep 5, 2021
CVE Published
via MITRE·05:14 PM
Data Sourced
via MITRE·05:14 PM
Description
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2021-40516?

CVE-2021-40516 has a severity rating that indicates a denial of service vulnerability.

2

How do I fix CVE-2021-40516?

To fix CVE-2021-40516, upgrade to WeeChat version 3.2.1 or later.

3

What causes CVE-2021-40516?

CVE-2021-40516 is caused by a crafted WebSocket frame that leads to an out-of-bounds read.

4

Which versions of WeeChat are affected by CVE-2021-40516?

WeeChat versions prior to 3.2.1 are affected by CVE-2021-40516.

5

Can CVE-2021-40516 be exploited remotely?

Yes, CVE-2021-40516 can be exploited remotely by attackers targeting the Relay plugin.

Contact

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