Vulnerability Name:

CVE-2020-8955 (CCN-176227)

Assigned:2017-09-23
Published:2017-09-23
Updated:2022-04-18
Summary: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).
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-120
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-8955

Source: SUSE
Type: Mailing List, Third Party Advisory
openSUSE-SU-2020:0248

Source: XF
Type: UNKNOWN
weechat-cve20208955-dos(176227)

Source: CCN
Type: WeeChat GIT Repository
irc: fix crash when receiving a malformed message 324 (channel mode)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20200324 [SECURITY] [DLA 2157-1] weechat security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210930 [SECURITY] [DLA 2770-1] weechat security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-4d232b48b8

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-db890b4800

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-d242130019

Source: GENTOO
Type: Third Party Advisory
GLSA-202003-51

Source: MISC
Type: Vendor Advisory
https://weechat.org/doc/security/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:weechat:weechat:*:*:*:*:*:*:*:* (Version >= 0.3.8 and <= 2.7)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:opensuse:backports_sle:15.0:-:*:*:*:*:*:*
  • OR cpe:/a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
  • OR cpe:/o:opensuse:leap:15.1:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20208955
    V
    		CVE-2020-8955
    2022-06-30
    oval:org.opensuse.security:def:113578
    P
    		weechat-3.2-1.3 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:74738
    P
    		Security update for xstream (Important)
    2021-10-20
    oval:org.opensuse.security:def:106964
    P
    		weechat-3.2-1.3 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:63239
    P
    		spice-gtk-devel-0.35-1.48 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:63442
    P
    		libvorbis0-32bit-1.3.6-4.3.1 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:62740
    P
    		file-roller-3.32.5-1.8 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62743
    P
    		fontforge-20200314-3.3.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62768
    P
    		libSoundTouch0-1.8.0-3.11.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62736
    P
    		cups-pk-helper-0.2.6-1.36 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:64551
    P
    		Security update for qemu (Important)
    2021-07-27
    oval:org.opensuse.security:def:93572
    P
    		 (Important)
    2021-07-14
    oval:org.opensuse.security:def:100285
    P
    		 (Important)
    2021-06-01
    oval:org.opensuse.security:def:64493
    P
    		Security update for python3 (Moderate)
    2021-05-11
    oval:org.opensuse.security:def:64663
    P
    		Security update for openldap2 (Important)
    2021-03-08
    oval:org.opensuse.security:def:64283
    P
    		Security update for flac (Moderate)
    2020-12-24
    oval:org.opensuse.security:def:74605
    P
    		Security update for gcc10, nvptx-tools (Moderate)
    2020-12-04
    oval:org.opensuse.security:def:62946
    P
    		cvs-1.12.12-2.30 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:63589
    P
    		libproxy1-config-gnome3-0.4.15-2.42 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:64284
    P
    		kbd on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:63818
    P
    		Security update for gdb (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:64391
    P
    		libtag1 on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:64147
    P
    		Security update for shim (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:110400
    P
    		Security update for weechat (Important)
    2020-02-27
    oval:com.ubuntu.bionic:def:202089550000000
    V
    		CVE-2020-8955 on Ubuntu 18.04 LTS (bionic) - medium.
    2020-02-12
    oval:com.ubuntu.xenial:def:202089550000000
    V
    		CVE-2020-8955 on Ubuntu 16.04 LTS (xenial) - medium.
    2020-02-12
    BACK
    weechat weechat *
    fedoraproject fedora 30
    fedoraproject fedora 31
    fedoraproject fedora 32
    opensuse backports sle 15.0 -
    opensuse backports sle 15.0 sp1
    opensuse leap 15.1
    debian debian linux 8.0
    debian debian linux 9.0