CVE-2014-9720: Tornado XSRF cookie allows side-channel attack against TLS (BREACH attack)

CVE-2014-9720 · Severity: low · CVSS 3.1 · Published 2020-01-24

Tornado before 3.2.2 sends arbitrary responses that contain a fixed CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a series of crafted requests.

Technologies: tornado (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2014-9720 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2014-9720 being exploited in the wild.
How severe is CVE-2014-9720?
Low severity, with a CVSS score of 3.1, published 24 January 2020.
Which products and versions are affected?
tornado (PyPI) ECOSYSTEM:introduced=0,fixed=3.2.2, GIT:introduced=0,fixed=1c36307463b1e8affae100bf9386948e6c1b2308|ECOSYSTEM:introduced=0,fixed=3.2.2.
Is there a fix for CVE-2014-9720?
Yes. tornado (PyPI): upgrade to 3.2.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2014-9720?
Check whether you run tornado (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • tornado (PyPI): upgrade to 3.2.2 or later
    pip install "tornado>=3.2.2"

Affected products

  • tornado (PyPI) ECOSYSTEM:introduced=0,fixed=3.2.2, GIT:introduced=0,fixed=1c36307463b1e8affae100bf9386948e6c1b2308|ECOSYSTEM:introduced=0,fixed=3.2.2

Identifiers

  • CVE-2014-9720
  • GHSA-8vpw-mgpf-mpvv
  • PYSEC-2020-213

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