NULL pointer dereference in Avahi - CVE-2021-36217
Published: July 12, 2021 / Updated: November 20, 2023
Vulnerability identifier: #VU54661
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-36217
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: avahi.org
Affected software:
Avahi
Avahi
Detailed vulnerability description
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the D-Bus interface. A local attacker can trigger denial of service conditions via the D-Bus interface or a "ping .local" command.
How to mitigate CVE-2021-36217
Install update from vendor's website.