Debian DLA-2481-1 : openldap security update

high Nessus Plugin ID 143518

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Synopsis

The remote Debian host is missing a security update.

Description

Two vulnerabilities in the certificate list syntax verification and in the handling of CSN normalization were discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. An unauthenticated remote attacker can take advantage of these flaws to cause a denial of service (slapd daemon crash) via specially crafted packets.

For Debian 9 stretch, these problems have been fixed in version 2.4.44+dfsg-5+deb9u6.

We recommend that you upgrade your openldap packages.

For the detailed security status of openldap please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/openldap

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

Plugin Details

Severity: High

ID: 143518

File Name: debian_DLA-2481.nasl

Version: 1.2

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/7/2020

Updated: 4/20/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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-2020-25710

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:debian:debian_linux:ldap-utils, p-cpe:/a:debian:debian_linux:libldap-2.4-2, p-cpe:/a:debian:debian_linux:libldap-2.4-2-dbg, p-cpe:/a:debian:debian_linux:libldap-common, p-cpe:/a:debian:debian_linux:libldap2-dev, p-cpe:/a:debian:debian_linux:slapd, p-cpe:/a:debian:debian_linux:slapd-dbg, p-cpe:/a:debian:debian_linux:slapd-smbk5pwd, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/4/2020

Reference Information

CVE: CVE-2020-25709, CVE-2020-25710

Detections

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