Amazon Linux 1 Security Advisory: ALAS-2020-1373
Advisory Release Date: 2020-05-22 20:58 Pacific
Advisory Updated Date: 2020-06-03 17:22 Pacific
Severity:
Important
Issue Overview:
A network amplification vulnerability was found in Unbound, in the way it processes delegation messages from one authoritative zone to another. This flaw allows an attacker to cause a denial of service or be part of an attack against another DNS server when Unbound is deployed as a recursive resolver or authoritative name server.(CVE-2020-12662)
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.(CVE-2020-12663)
Affected Packages:
unbound
Issue Correction:
Run yum update unbound to update your system.
New Packages:
i686:
unbound-1.6.6-1.5.amzn1.i686
unbound-libs-1.6.6-1.5.amzn1.i686
unbound-debuginfo-1.6.6-1.5.amzn1.i686
unbound-devel-1.6.6-1.5.amzn1.i686
unbound-python-1.6.6-1.5.amzn1.i686
src:
unbound-1.6.6-1.5.amzn1.src
x86_64:
unbound-devel-1.6.6-1.5.amzn1.x86_64
unbound-debuginfo-1.6.6-1.5.amzn1.x86_64
unbound-libs-1.6.6-1.5.amzn1.x86_64
unbound-python-1.6.6-1.5.amzn1.x86_64
unbound-1.6.6-1.5.amzn1.x86_64