Detections
Analytics
Amazon Linux 2 : bind (ALAS-2020-1441)
medium Nessus Plugin ID 138043
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
'managed-keys' is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745 . (CVE-2018-5745)With pipelining enabled each incoming query on a TCP connection requires a similar resource allocation to a query received via UDP or via TCP without pipelining enabled. A client using a TCP-pipelined connection to a server could consume more resources than the server has been provisioned to handle. When a TCP connection with a large number of pipelined queries is closed, the load on the server releasing these multiple resources can cause it to become unresponsive, even for queries that can be answered authoritatively or from cache. (This is most likely to be perceived as an intermittent server problem). (CVE-2019-6477)
Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected:
BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition.
Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465 . (CVE-2019-6465)
Solution
Run 'yum update bind' to update your system.See Also
Plugin Details
Severity: Medium
ID: 138043
File Name: al2_ALAS-2020-1441.nasl
Version: 1.2
Type: local
Agent: unix
Published: 7/2/2020
Updated: 7/6/2020
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2019-6465
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:bind, p-cpe:/a:amazon:linux:bind-chroot, p-cpe:/a:amazon:linux:bind-debuginfo, p-cpe:/a:amazon:linux:bind-devel, p-cpe:/a:amazon:linux:bind-export-devel, p-cpe:/a:amazon:linux:bind-export-libs, p-cpe:/a:amazon:linux:bind-libs, p-cpe:/a:amazon:linux:bind-libs-lite, p-cpe:/a:amazon:linux:bind-license, p-cpe:/a:amazon:linux:bind-lite-devel, p-cpe:/a:amazon:linux:bind-pkcs11, p-cpe:/a:amazon:linux:bind-pkcs11-devel, p-cpe:/a:amazon:linux:bind-pkcs11-libs, p-cpe:/a:amazon:linux:bind-pkcs11-utils, p-cpe:/a:amazon:linux:bind-sdb, p-cpe:/a:amazon:linux:bind-sdb-chroot, p-cpe:/a:amazon:linux:bind-utils, cpe:/o:amazon:linux:2
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/1/2020
Vulnerability Publication Date: 10/9/2019
Reference Information
CVE: CVE-2018-5745, CVE-2019-6465, CVE-2019-6477
ALAS: 2020-1441