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Amazon Linux 2 : bind (ALAS-2020-1564)

medium Nessus Plugin ID 143579

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1564 advisory.

 - In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.
 (CVE-2020-8622)

 - In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with
 --enable-native-pkcs11 * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker (CVE-2020-8623)

 - In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.21, 9.12.1 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.12-S1 -> 9.9.13-S1, 9.11.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker who has been granted privileges to change a specific subset of the zone's content could abuse these unintended additional privileges to update other contents of the zone. (CVE-2020-8624)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update bind' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2020-1564.html

https://access.redhat.com/security/cve/CVE-2020-8622

https://access.redhat.com/security/cve/CVE-2020-8623

https://access.redhat.com/security/cve/CVE-2020-8624

Plugin Details

Severity: Medium

ID: 143579

File Name: al2_ALAS-2020-1564.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/9/2020

Updated: 12/9/2020

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2020-8624

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:bind-pkcs11-utils, p-cpe:/a:amazon:linux:bind-pkcs11-devel, p-cpe:/a:amazon:linux:bind-export-libs, p-cpe:/a:amazon:linux:bind-libs-lite, p-cpe:/a:amazon:linux:bind-lite-devel, p-cpe:/a:amazon:linux:bind-export-devel, p-cpe:/a:amazon:linux:bind-sdb-chroot, p-cpe:/a:amazon:linux:bind-debuginfo, p-cpe:/a:amazon:linux:bind-chroot, p-cpe:/a:amazon:linux:bind-devel, p-cpe:/a:amazon:linux:bind-pkcs11-libs, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:bind-sdb, p-cpe:/a:amazon:linux:bind-license, p-cpe:/a:amazon:linux:bind-utils, p-cpe:/a:amazon:linux:bind-libs, p-cpe:/a:amazon:linux:bind, p-cpe:/a:amazon:linux:bind-pkcs11

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2020

Vulnerability Publication Date: 8/20/2020

Reference Information

CVE: CVE-2020-8622, CVE-2020-8623, CVE-2020-8624

ALAS: 2020-1564