Alibaba Cloud Linux 3 : 0213: bind (ALINUX3-SA-2022:0213)

high Nessus Plugin ID 236294

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0213 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2018-5743:
By design, BIND is intended to limit the number of TCP clients that can be connected at any given time.
The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0.
BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.

CVE-2020-8616:
A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.

CVE-2021-25214:
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

CVE-2021-25215:
In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

CVE-2021-25219:
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 236294

File Name: alinux3_sa_2022-0213.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-25219

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

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

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

CVSS Score Source: CVE-2020-8616

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-export-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-bind, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-utils-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-utils-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-license, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-export-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-libs-lite, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-utils, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-sdb, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-export-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-sdb-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-utils, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-chroot, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-libs-lite-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-pkcs11, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-sdb-chroot, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:bind-lite-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/7/2022

Vulnerability Publication Date: 4/24/2019

Reference Information

CVE: CVE-2018-5743, CVE-2020-8616, CVE-2021-25214, CVE-2021-25215, CVE-2021-25219

Detections

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