CVE-2021-29376 — ircii - security update

Description

ircII before 20210314 allows remote attackers to cause a denial of service (segmentation fault and client crash, disconnecting the victim from an IRC server) via a crafted CTCP UTC message.

How to fix CVE-2021-29376

To remediate CVE-2021-29376, upgrade the affected package to a fixed version below.

Alpine/ircii—upgrade to 20210314-r0 or later
Debian/ircii—upgrade to 20210314-1 or later
—upgrade to 20151120-1+deb9u1 or later
—upgrade to 2.2.3-2 or later
—upgrade to 2.2.3-1+deb9u1 or later

Is CVE-2021-29376 being exploited?

Low — EPSS is 3.6%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 20210314-r0
from 0, < 20210314-1
from 0, < 20151120-1+deb9u1
from 0, < 2.2.3-2
from 0, < 2.2.3-1+deb9u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)

ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-29376
ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-29376