UBUNTU-CVE-2021-40516

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Source
https://ubuntu.com/security/CVE-2021-40516
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40516.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-40516
Upstream
Downstream
Related
Published
2021-09-05T18:15:00Z
Modified
2025-09-08T16:47:21Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.

References

Affected packages

Ubuntu:Pro:16.04:LTS / weechat

Package

Name
weechat
Purl
pkg:deb/ubuntu/weechat@1.4-2ubuntu0.1+esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4-2ubuntu0.1+esm1

Affected versions

1.*

1.3-1
1.3-1build1
1.4-1
1.4-1build1
1.4-1build2
1.4-2
1.4-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "weechat",
            "binary_version": "1.4-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "weechat-core",
            "binary_version": "1.4-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "weechat-curses",
            "binary_version": "1.4-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "weechat-dev",
            "binary_version": "1.4-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "weechat-plugins",
            "binary_version": "1.4-2ubuntu0.1+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / weechat

Package

Name
weechat
Purl
pkg:deb/ubuntu/weechat@1.9.1-1ubuntu1+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.9.1-1ubuntu1+esm1

Affected versions

1.*

1.9.1-1
1.9.1-1build1
1.9.1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "weechat",
            "binary_version": "1.9.1-1ubuntu1+esm1"
        },
        {
            "binary_name": "weechat-core",
            "binary_version": "1.9.1-1ubuntu1+esm1"
        },
        {
            "binary_name": "weechat-curses",
            "binary_version": "1.9.1-1ubuntu1+esm1"
        },
        {
            "binary_name": "weechat-dev",
            "binary_version": "1.9.1-1ubuntu1+esm1"
        },
        {
            "binary_name": "weechat-plugins",
            "binary_version": "1.9.1-1ubuntu1+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:20.04:LTS / weechat

Package

Name
weechat
Purl
pkg:deb/ubuntu/weechat@2.8-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.8-1ubuntu0.1~esm1

Affected versions

2.*

2.6-2
2.6-2build1
2.6-2build2
2.6-2ubuntu1
2.6-2ubuntu2
2.8-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "weechat",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-core",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-curses",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-dev",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-guile",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-headless",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-lua",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-perl",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-php",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-plugins",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-python",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-ruby",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "weechat-tcl",
            "binary_version": "2.8-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}