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Debian DLA-2563-1 : openssl security update

high Nessus Plugin ID 146612

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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 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 parsing caused by the lack of error handling while ingesting the 'issuer' field.

For Debian 9 'Stretch', these problems have been fixed in version 1.1.0l-1~deb9u3.

We recommend that you upgrade your openssl packages.

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

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.

See Also

https://lists.debian.org/debian-lts-announce/2021/02/msg00023.html

https://packages.debian.org/source/stretch/openssl

https://security-tracker.debian.org/tracker/source-package/openssl

Plugin Details

Severity: High

ID: 146612

File Name: debian_DLA-2563.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2/19/2021

Updated: 12/6/2022

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, 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: p-cpe:/a:debian:debian_linux:libssl-dev, p-cpe:/a:debian:debian_linux:libssl1.1-udeb, p-cpe:/a:debian:debian_linux:libssl-doc, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:libssl1.1, p-cpe:/a:debian:debian_linux:openssl, p-cpe:/a:debian:debian_linux:libcrypto1.1-udeb

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