Amazon Linux 2 Security Advisory: ALAS-2018-954
Advisory Release Date: 2018-02-20 21:03 Pacific
Advisory Updated Date: 2018-02-21 21:18 Pacific
Severity:
Important
Issue Overview:
Improper fetch cleanup sequencing in the resolver can cause named to crash
A use-after-free flaw leading to denial of service was found in the way BIND internally handled cleanup operations on upstream recursion fetch contexts. A remote attacker could potentially use this flaw to make named, acting as a DNSSEC validating resolver, exit unexpectedly with an assertion failure via a specially crafted DNS request. (CVE-2017-3145)
Affected Packages:
bind
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update bind to update your system.
New Packages:
noarch:
bind-license-9.9.4-51.amzn2.2.noarch
src:
bind-9.9.4-51.amzn2.2.src
x86_64:
bind-9.9.4-51.amzn2.2.x86_64
bind-pkcs11-9.9.4-51.amzn2.2.x86_64
bind-pkcs11-utils-9.9.4-51.amzn2.2.x86_64
bind-pkcs11-libs-9.9.4-51.amzn2.2.x86_64
bind-pkcs11-devel-9.9.4-51.amzn2.2.x86_64
bind-sdb-9.9.4-51.amzn2.2.x86_64
bind-libs-lite-9.9.4-51.amzn2.2.x86_64
bind-libs-9.9.4-51.amzn2.2.x86_64
bind-utils-9.9.4-51.amzn2.2.x86_64
bind-devel-9.9.4-51.amzn2.2.x86_64
bind-lite-devel-9.9.4-51.amzn2.2.x86_64
bind-chroot-9.9.4-51.amzn2.2.x86_64
bind-sdb-chroot-9.9.4-51.amzn2.2.x86_64
bind-debuginfo-9.9.4-51.amzn2.2.x86_64