Amazon Linux AMI : python-tornado (ALAS-2015-521)

medium Nessus Plugin ID 83272


The remote Amazon Linux AMI host is missing a security update.


A denial of service flaw was found in the way Python's SSL module implementation performed matching of certain certificate names. A remote attacker able to obtain a valid certificate that contained multiple wildcard characters could use this flaw to issue a request to validate such a certificate, resulting in excessive consumption of CPU.


Run 'yum update python-tornado' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 83272

File Name: ala_ALAS-2015-521.nasl

Version: 1.2

Type: local

Agent: unix

Published: 5/7/2015

Updated: 4/18/2018

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

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.3

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python26-tornado, p-cpe:/a:amazon:linux:python26-tornado-doc, p-cpe:/a:amazon:linux:python27-tornado, p-cpe:/a:amazon:linux:python27-tornado-doc, cpe:/o:amazon:linux

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

Patch Publication Date: 5/5/2015

Reference Information

CVE: CVE-2013-2099

ALAS: 2015-521