Detections
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Amazon Linux 2 : libldb (ALAS-2021-1628)

high Nessus Plugin ID 148914

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Synopsis

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

Description

The version of libldb installed on the remote host is prior to 1.5.4-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1628 advisory.

 A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability. (CVE-2021-20277)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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 libldb' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1628.html

https://access.redhat.com/security/cve/CVE-2021-20277

Plugin Details

Severity: High

ID: 148914

File Name: al2_ALAS-2021-1628.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/22/2021

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-20277

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:amazon:linux:libldb, p-cpe:/a:amazon:linux:ldb-tools, p-cpe:/a:amazon:linux:pyldb, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:libldb-devel, p-cpe:/a:amazon:linux:pyldb-devel, p-cpe:/a:amazon:linux:libldb-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/20/2021

Vulnerability Publication Date: 3/24/2021

Reference Information

CVE: CVE-2021-20277

ALAS: 2021-1628