UBUNTU-CVE-2021-3502

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Source
https://ubuntu.com/security/CVE-2021-3502
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3502.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3502
Related
Published
2021-05-07T12:15:00Z
Modified
2021-05-07T12:15:00Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in avahi 0.8-5. A reachable assertion is present in avahishostnameresolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.

References

Affected packages

Ubuntu:22.04:LTS / avahi

Package

Name
avahi
Purl
pkg:deb/ubuntu/avahi?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.8-5ubuntu4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-autoipd"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-autoipd-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-daemon"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-daemon-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-discover"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-dnsconfd"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-dnsconfd-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-ui-utils"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-ui-utils-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-utils"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "avahi-utils-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "gir1.2-avahi-0.6"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-client-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-client3"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-client3-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-common-data"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-common-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-common3"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-common3-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-compat-libdnssd-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-compat-libdnssd1"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-compat-libdnssd1-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-core-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-core7"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-core7-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-glib-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-glib1"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-glib1-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-gobject-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-gobject0"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-gobject0-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-ui-gtk3-0"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-ui-gtk3-0-dbgsym"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "libavahi-ui-gtk3-dev"
        },
        {
            "binary_version": "0.8-5ubuntu4",
            "binary_name": "python3-avahi"
        }
    ]
}