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CVE
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CVE-2016-3957Date: (C)2018-02-07   (M)2018-02-26


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 9.8CVSS Score : 7.5
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 5.9Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: HIGH 
  
Reference:
https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/
https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200

CPE    68
cpe:/a:web2py:web2py:1.99.7
cpe:/a:web2py:web2py:1.99.5
cpe:/a:web2py:web2py:1.76.4
cpe:/a:web2py:web2py:1.99.4
...
CWE    1
CWE-502

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