CVE-2016-3957

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
The secure_load function in gluon/utils.py in web2py before 2.14.2 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.
Overview
  • CVE ID
  • CVE-2016-3957
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-02-06T18:29:00
  • Last Modified Date
  • 2019-06-21T22:15:10
Weakness Enumerations
CWE URL
CWE-502 http://cwe.mitre.org/data/definitions/502.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:web2py:web2py:*:*:*:*:*:*:*:* 1 OR 2.14.2
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200 Third Party Advisory
https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/ Exploit Technical Description Third Party Advisory
https://usn.ubuntu.com/4030-1/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-3957
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3957
History
Created Old Value New Value Data Type Notes
2022-05-10 07:49:40 Added to TrackCVE
2022-12-03 01:48:27 2018-02-06T18:29Z 2018-02-06T18:29:00 CVE Published Date updated
2022-12-03 01:48:27 2019-06-21T22:15:10 CVE Modified Date updated
2022-12-03 01:48:27 Modified Vulnerability Status updated