EulerOS 2.0 SP5 : openssl110h (EulerOS-SA-2019-2218)

Medium Nessus Plugin ID 130680

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the openssl110h packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).(CVE-2018-0734)

- Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead of using a named curve). In those cases it is possible that such a group does not have the cofactor present.
This can occur even where all the parameters match a known named curve. If such a curve is used then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability to time the creation of a large number of signatures where explicit parameters with no co-factor present are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because explicit parameters are never used.(CVE-2019-1547)

- In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack.
Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt.(CVE-2019-1563)

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

Solution

Update the affected openssl110h packages.

See Also

http://www.nessus.org/u?df17cae3

Plugin Details

Severity: Medium

ID: 130680

File Name: EulerOS_SA-2019-2218.nasl

Version: 1.3

Type: local

Published: 2019/11/08

Updated: 2020/05/07

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2019-1563

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 3.7

Temporal Score: 3.2

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:openssl110h, p-cpe:/a:huawei:euleros:openssl110h-devel, p-cpe:/a:huawei:euleros:openssl110h-libs, p-cpe:/a:huawei:euleros:openssl110h-static, cpe:/o:huawei:euleros:2.0

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/10/29

Reference Information

CVE: CVE-2018-0734, CVE-2019-1547, CVE-2019-1563