CVE-2020-8955: Buffer Overflow
First published: Wed Feb 12 2020(Updated: )
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).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WeeChat | >=0.3.8<=2.7 | |
| Fedora | =30 | |
| Fedora | =31 | |
| Fedora | =32 | |
| openSUSE Backports | =15.0 | |
| openSUSE Backports | =15.0-sp1 | |
| openSUSE | =15.1 | |
| Debian | =8.0 | |
| Debian | =9.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.html
- https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da
- https://lists.debian.org/debian-lts-announce/2020/03/msg00031.html
- https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ASRTCQFFDAAK347URWNDH6NSED2BGNY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ER23GT23US5JXDLUZAMGMWXKZ74MI4S2/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M3LAJTLI3LWZRNCFYJ7PCBBTHUMCCBHH/
- https://security.gentoo.org/glsa/202003-51
- https://weechat.org/doc/security/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ASRTCQFFDAAK347URWNDH6NSED2BGNY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER23GT23US5JXDLUZAMGMWXKZ74MI4S2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M3LAJTLI3LWZRNCFYJ7PCBBTHUMCCBHH/
Frequently Asked Questions
What is the severity of CVE-2020-8955?
CVE-2020-8955 has been classified as a denial of service vulnerability due to buffer overflow that can cause application crashes.
How do I fix CVE-2020-8955?
To mitigate CVE-2020-8955, users should update WeeChat to a version later than 2.7 or apply available patches.
Which versions of WeeChat are affected by CVE-2020-8955?
WeeChat versions from 0.3.8 to 2.7 are vulnerable to CVE-2020-8955.
What impact can CVE-2020-8955 have on my system?
CVE-2020-8955 can result in a denial of service or potential unspecified impacts due to remote exploitation via malformed IRC messages.
Is CVE-2020-8955 specific to any operating systems?
Yes, CVE-2020-8955 affects multiple operating systems including Fedora, openSUSE, and Debian.
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- version/fedora/30
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