CVE-2021-40516

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.98% Top 25%
Vendor Advisory weechat.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://weechat.org/doc/security/ patch vendor advisory
https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b third party advisory patch
https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-40516?
CVE-2021-40516 has been scored as a high severity vulnerability.
How to fix CVE-2021-40516?
To fix CVE-2021-40516, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40516 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40516 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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