Upstream information

CVE-2021-3502 at MITRE

Description

A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 5.5
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Access Vector Local Local
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1184846 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • avahi >= 0.8-7.2
  • avahi-autoipd >= 0.8-7.2
  • avahi-compat-howl-devel >= 0.8-7.2
  • avahi-compat-mDNSResponder-devel >= 0.8-7.2
  • avahi-lang >= 0.8-7.2
  • avahi-utils >= 0.8-7.2
  • libavahi-client3 >= 0.8-7.2
  • libavahi-client3-32bit >= 0.8-7.2
  • libavahi-common3 >= 0.8-7.2
  • libavahi-common3-32bit >= 0.8-7.2
  • libavahi-core7 >= 0.8-7.2
  • libavahi-devel >= 0.8-7.2
  • libavahi-libevent1 >= 0.8-7.2
  • libdns_sd >= 0.8-7.2
  • libdns_sd-32bit >= 0.8-7.2
  • libhowl0 >= 0.8-7.2
  • python36-avahi >= 0.8-7.2
  • python38-avahi >= 0.8-7.2
  • python39-avahi >= 0.8-7.2
Patchnames:
openSUSE Tumbleweed GA avahi-0.8-7.2


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
HPE Helion OpenStack 8 avahi Not affected
SUSE CaaS Platform 4.0 avahi Not affected
SUSE Enterprise Storage 6 avahi Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 avahi Not affected
SUSE Linux Enterprise High Performance Computing 15 LTSS avahi Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS avahi Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 avahi Not affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP2 avahi Not affected
SUSE Linux Enterprise Point of Service 11 SP3 avahi Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS avahi Not affected
SUSE Linux Enterprise Server 12 SP3 ESPOS avahi Not affected
SUSE Linux Enterprise Server 12 SP3 LTSS avahi Not affected
SUSE Linux Enterprise Server 12 SP4 ESPOS avahi Not affected
SUSE Linux Enterprise Server 12 SP4 LTSS avahi Not affected
SUSE Linux Enterprise Server 12 SP5 avahi Not affected
SUSE Linux Enterprise Server 15 ESPOS avahi Not affected
SUSE Linux Enterprise Server 15 LTSS avahi Not affected
SUSE Linux Enterprise Server 15 SP1 LTSS avahi Not affected
SUSE Linux Enterprise Server BCL 12 SP2 avahi Not affected
SUSE Linux Enterprise Server BCL 12 SP3 avahi Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 avahi Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 avahi Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 avahi Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 avahi Not affected
SUSE Linux Enterprise Server for SAP Applications 15 avahi Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 avahi Not affected
SUSE Manager Proxy 4.0 avahi Not affected
SUSE Manager Retail Branch Server 4.0 avahi Not affected
SUSE Manager Server 4.0 avahi Not affected
SUSE OpenStack Cloud 8 avahi Not affected
SUSE OpenStack Cloud 9 avahi Not affected
SUSE OpenStack Cloud Crowbar 8 avahi Not affected
SUSE OpenStack Cloud Crowbar 9 avahi Not affected