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Debian DLA-1449-1 : openssl security update

medium Nessus Plugin ID 111390

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Synopsis

The remote Debian host is missing a security update.

Description

Two issues were discovered in OpenSSL, the Secure Sockets Layer toolkit.

CVE-2018-0732

Denial of service by a malicious server that sends a very large prime value to the client during TLS handshake.

CVE-2018-0737

Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that the OpenSSL RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover the private key.

For Debian 8 'Jessie', these problems have been fixed in version 1.0.1t-1+deb8u9.

We recommend that you upgrade your openssl packages.

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/2018/07/msg00043.html

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

Plugin Details

Severity: Medium

ID: 111390

File Name: debian_DLA-1449.nasl

Version: 1.7

Type: local

Agent: unix

Published: 7/30/2018

Updated: 9/2/2024

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: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-0737

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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:libcrypto1.0.0-udeb, p-cpe:/a:debian:debian_linux:libssl-doc, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:openssl, p-cpe:/a:debian:debian_linux:libssl1.0.0-dbg, p-cpe:/a:debian:debian_linux:libssl1.0.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/27/2018

Reference Information

CVE: CVE-2018-0732, CVE-2018-0737