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Arbitrary Code Execution Affecting web2py package, versions [,2.14.2)

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 2.07% (89th percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-PYTHON-WEB2PY-42083
  • published 21 Mar 2018
  • disclosed 6 Feb 2018
  • credit Unknown
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Introduced: 6 Feb 2018

CVE-2016-3957 Open this link in a new tab
CWE-94 Open this link in a new tab

How to fix?

Upgrade web2py to version 2.14.2 or higher.

Overview

web2py is an open source full-stack enterprise framework for agile development of secure database-driven web-based applications, written and programmable in Python.

Affected versions of this package are vulnerable to Arbitrary Code Execution. The secure_load function in gluon/utils.py uses pickle.loads to deserialize session information stored in cookies, which might allow remote attackers to execute arbitrary code by leveraging knowledge of encryption_key.

References