Denial of Service (DoS) Affecting tornado package, versions [,3.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
5.33% (94th percentile)

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  • Snyk IDSNYK-PYTHON-TORNADO-40010
  • published15 May 2013
  • disclosed15 May 2013
  • creditUnknown

Introduced: 15 May 2013

CVE-2013-2099  (opens in a new tab)
CWE-399  (opens in a new tab)

How to fix?

Upgrade tornado to version 3.2 or higher.

Overview

tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.

Affected versions of this package are vulnerable to Denial of Service (DoS). Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate.

CVSS Scores

version 3.1