Important: bind

Issue Overview:

A flaw was found in the way bind implemented tunable which limited simultaneous TCP client connections. A remote attacker could use this flaw to exhaust the pool of file descriptors available to named, potentially affecting network connections and the management of files such as log files or zone journal files. In cases where the named process is not limited by OS-enforced per-process limits, this could additionally potentially lead to exhaustion of all available free file descriptors on that system. (CVE-2018-5743)

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:

aarch64:  
    bind-9.9.4-74.amzn2.1.2.aarch64  
    bind-pkcs11-9.9.4-74.amzn2.1.2.aarch64  
    bind-pkcs11-utils-9.9.4-74.amzn2.1.2.aarch64  
    bind-pkcs11-libs-9.9.4-74.amzn2.1.2.aarch64  
    bind-pkcs11-devel-9.9.4-74.amzn2.1.2.aarch64  
    bind-sdb-9.9.4-74.amzn2.1.2.aarch64  
    bind-libs-lite-9.9.4-74.amzn2.1.2.aarch64  
    bind-libs-9.9.4-74.amzn2.1.2.aarch64  
    bind-utils-9.9.4-74.amzn2.1.2.aarch64  
    bind-devel-9.9.4-74.amzn2.1.2.aarch64  
    bind-lite-devel-9.9.4-74.amzn2.1.2.aarch64  
    bind-chroot-9.9.4-74.amzn2.1.2.aarch64  
    bind-sdb-chroot-9.9.4-74.amzn2.1.2.aarch64  
    bind-debuginfo-9.9.4-74.amzn2.1.2.aarch64  
  
i686:  
    bind-9.9.4-74.amzn2.1.2.i686  
    bind-pkcs11-9.9.4-74.amzn2.1.2.i686  
    bind-pkcs11-utils-9.9.4-74.amzn2.1.2.i686  
    bind-pkcs11-libs-9.9.4-74.amzn2.1.2.i686  
    bind-pkcs11-devel-9.9.4-74.amzn2.1.2.i686  
    bind-sdb-9.9.4-74.amzn2.1.2.i686  
    bind-libs-lite-9.9.4-74.amzn2.1.2.i686  
    bind-libs-9.9.4-74.amzn2.1.2.i686  
    bind-utils-9.9.4-74.amzn2.1.2.i686  
    bind-devel-9.9.4-74.amzn2.1.2.i686  
    bind-lite-devel-9.9.4-74.amzn2.1.2.i686  
    bind-chroot-9.9.4-74.amzn2.1.2.i686  
    bind-sdb-chroot-9.9.4-74.amzn2.1.2.i686  
    bind-debuginfo-9.9.4-74.amzn2.1.2.i686  
  
noarch:  
    bind-license-9.9.4-74.amzn2.1.2.noarch  
  
src:  
    bind-9.9.4-74.amzn2.1.2.src  
  
x86_64:  
    bind-9.9.4-74.amzn2.1.2.x86_64  
    bind-pkcs11-9.9.4-74.amzn2.1.2.x86_64  
    bind-pkcs11-utils-9.9.4-74.amzn2.1.2.x86_64  
    bind-pkcs11-libs-9.9.4-74.amzn2.1.2.x86_64  
    bind-pkcs11-devel-9.9.4-74.amzn2.1.2.x86_64  
    bind-sdb-9.9.4-74.amzn2.1.2.x86_64  
    bind-libs-lite-9.9.4-74.amzn2.1.2.x86_64  
    bind-libs-9.9.4-74.amzn2.1.2.x86_64  
    bind-utils-9.9.4-74.amzn2.1.2.x86_64  
    bind-devel-9.9.4-74.amzn2.1.2.x86_64  
    bind-lite-devel-9.9.4-74.amzn2.1.2.x86_64  
    bind-chroot-9.9.4-74.amzn2.1.2.x86_64  
    bind-sdb-chroot-9.9.4-74.amzn2.1.2.x86_64  
    bind-debuginfo-9.9.4-74.amzn2.1.2.x86_64  

Additional References

Red Hat: CVE-2018-5743

Mitre: CVE-2018-5743