#VU53998 Stack-based buffer overflow in ConnMan - CVE-2021-33833
Published: June 9, 2021 / Updated: September 19, 2022
Vulnerability identifier: #VU53998
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-33833
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ConnMan
ConnMan
Software vendor:
kernel.org
kernel.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within the dnsproxy component in the uncompress function when unpacking NAME and RDATA/RDLENGTH fields with TYPE A/AAAA. A remote attacker can send specially crafted DNS packet to the ConnMan and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.