Input validation error in Unbound - CVE-2020-10772
Published: July 15, 2020 / Updated: July 27, 2020
Vulnerability identifier: #VU29959
CSH Severity: Medium
CVSS v4.0: 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-2020-10772
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NLnet Labs
Affected software:
Unbound
Unbound
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due incomplete fix for vulnerability SB2020052127 #1 (CVE-2020-12662). A remote attacker who controls a malicious DNS server can send a specially crafted response and perform a denial of service (DoS) attack against third-party DNS servers.
How to mitigate CVE-2020-10772
Install update from vendor's website.