CVE-2021-3502
MEDIUM
5.5
CVSS Score
Published: May 7, 2021 at 11:46 AM UTC
Updated: June 17, 2026 at 04:05 AM UTC
1 product affected across 1 vendorAvahi
Using avahi by N/A?
Get instant alerts when new vulnerabilities affect avahi - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1946914x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/lathiat/avahi/issues/338CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-617
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card