CVE-2016-3957

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 v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
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/

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Configurations

Configuration 1 (hide)

cpe:2.3:a:web2py:web2py:*:*:*:*:*:*:*:*

Information

Published : 2018-02-06 10:29

Updated : 2019-06-21 15:15

NVD link : CVE-2016-3957

Mitre link : CVE-2016-3957

JSON object : View

CWE

CWE-502

Deserialization of Untrusted Data

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Products Affected

web2py

web2py

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