Ubuntu 16.04 LTS : pyopenssl vulnerabilities (USN-3813-1)

High Nessus Plugin ID 118855

Synopsis

The remote Ubuntu host is missing one or more security-related
patches.

Description

It was discovered that pyOpenSSL incorrectly handled memory when
handling X509 objects. A remote attacker could use this issue to cause
pyOpenSSL to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2018-1000807)

It was discovered that pyOpenSSL incorrectly handled memory when
performing operations on a PKCS #12 store. A remote attacker could
possibly use this issue to cause pyOpenSSL to consume resources,
resulting in a denial of service. (CVE-2018-1000808).

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

Solution

Update the affected python-openssl and / or python3-openssl packages.

See Also

https://usn.ubuntu.com/3813-1/

Plugin Details

Severity: High

ID: 118855

File Name: ubuntu_USN-3813-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2018/11/09

Modified: 2019/01/11

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

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

CVSS v3.0

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-openssl, p-cpe:/a:canonical:ubuntu_linux:python3-openssl, cpe:/o:canonical:ubuntu_linux:16.04

Patch Publication Date: 2018/11/08

Reference Information

CVE: CVE-2018-1000807, CVE-2018-1000808

USN: 3813-1