Local Attack Vulnerability in Avahi Service by Vendor Linux
CVE-2021-3502

5.5MEDIUM

Key Information:

Vendor

Avahi

Status
Avahi
Vendor
CVE Published:
7 May 2021

What is CVE-2021-3502?

A flaw exists in the Avahi service where the avahi_s_host_name_resolver_start function contains a reachable assertion. This vulnerability allows a local attacker to crash the Avahi service by making requests for hostname resolutions using invalid hostnames via the Avahi socket or D-Bus methods. The primary risk associated with this vulnerability pertains to the disruption of service availability, affecting users relying on the Avahi service for network service discovery.

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Affected Version(s)

avahi 0.8-5

References

https://bugzilla.redhat.com/show_bug.cgi?id=1946914
x_refsource_MISC
https://github.com/lathiat/avahi/issues/338
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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