Vulnerability Name:

CVE-2020-9760 (CCN-178293)

Assigned:2020-02-10
Published:2020-02-10
Updated:2022-04-01
Summary:An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is received with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick.
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-2020-9760

Source: XF
Type: UNKNOWN
weechat-cve20209760-dos(178293)

Source: CCN
Type: WeeChat GIT Repository
irc: fix crash when a new message 005 is received with longer nick

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/weechat/weechat/commit/40ccacb4330a64802b1f1e28ed9a6b6d3ca9197f

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

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

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-9760

Vulnerable Configuration:Configuration 1:
  • cpe:/a:weechat:weechat:*:*:*:*:*:*:*:* (Version >= 0.3.4 and < 2.7.1)

  • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:weechat:weechat:2.7:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    weechat weechat *
    debian debian linux 8.0
    debian debian linux 9.0
    weechat weechat 2.7 -