SUSE SLED15 / SLES15 / openSUSE 15 Security Update : bind (SUSE-SU-2023:0427-1)

high Nessus Plugin ID 171528

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0427-1 advisory.

- Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and earlier branches are also affected, but through exhaustion of internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers.
Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1. (CVE-2022-3094)

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 171528

File Name: suse_SU-2023-0427-1.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 2/16/2023

Updated: 7/14/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2022-3094

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libbind9-1600, p-cpe:/a:novell:suse_linux:bind-chrootenv, p-cpe:/a:novell:suse_linux:bind-devel, p-cpe:/a:novell:suse_linux:python3-bind, p-cpe:/a:novell:suse_linux:libirs-devel, p-cpe:/a:novell:suse_linux:bind, p-cpe:/a:novell:suse_linux:bind-doc, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libns1604, p-cpe:/a:novell:suse_linux:libdns1605, p-cpe:/a:novell:suse_linux:libisccc1600, p-cpe:/a:novell:suse_linux:libisc1606, p-cpe:/a:novell:suse_linux:libirs1601, p-cpe:/a:novell:suse_linux:libisccfg1600, p-cpe:/a:novell:suse_linux:bind-utils

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/15/2023

Vulnerability Publication Date: 1/25/2023

Reference Information

CVE: CVE-2022-3094

IAVA: 2023-A-0058-S

SuSE: SUSE-SU-2023:0427-1

Detections

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