Debian DLA-2565-1 : openssl1.0 security update

high Nessus Plugin ID 146604

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there were two issues in the 1.0 branch of the OpenSSL cryptographic system :

- CVE-2021-23840: Prevent an issue where 'Digital EnVeloPe' EVP-related calls could cause applications to behave incorrectly or even crash.

- CVE-2021-23841: Prevent an issue in the X509 certificate handling caused by the lack of error handling whilst parsing 'issuer' fields.

For Debian 9 'Stretch', these problems have been fixed in version 1.0.2u-1~deb9u4. For the equivalent changes for the 1.1 branch of OpenSSL, please see DLA-2563-1.

We recommend that you upgrade your openssl1.0 packages.

For the detailed security status of openssl1.0 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/openssl1.0

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 libssl1.0-dev, and libssl1.0.2 packages.

Plugin Details

Severity: High

ID: 146604

File Name: debian_DLA-2565.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/19/2021

Updated: 12/6/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2021-23840

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: cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:libssl1.0-dev, p-cpe:/a:debian:debian_linux:libssl1.0.2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/18/2021

Vulnerability Publication Date: 2/16/2021

Reference Information

CVE: CVE-2021-23840, CVE-2021-23841

Detections

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