CVE-2020-8955

Description

irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 14.21% Top 10%
Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory weechat.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://weechat.org/doc/security/ vendor advisory
https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da third party advisory patch
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.html mailing list third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ASRTCQFFDAAK347URWNDH6NSED2BGNY/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER23GT23US5JXDLUZAMGMWXKZ74MI4S2/ vendor advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00031.html third party advisory mailing list
https://security.gentoo.org/glsa/202003-51 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M3LAJTLI3LWZRNCFYJ7PCBBTHUMCCBHH/ vendor advisory
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-2020-8955?
CVE-2020-8955 has been scored as a critical severity vulnerability.
How to fix CVE-2020-8955?
To fix CVE-2020-8955, 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-2020-8955 being actively exploited in the wild?
It is possible that CVE-2020-8955 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~14% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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