CVE-2016-3957

Published: Feb 6, 2018Modified: Nov 21, 2024

9.8

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Web2py: Web2py

Web2py

1 product

Web2py

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Web2py Web2py	Before 2.14.2

Related CWEs

CWE-502

Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

References (6)

https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/

Source: cve@mitre.org

ExploitTechnical DescriptionThird Party Advisory

https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200

Source: cve@mitre.org

Third Party Advisory

https://usn.ubuntu.com/4030-1/

Source: cve@mitre.org

https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitTechnical DescriptionThird Party Advisory

https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://usn.ubuntu.com/4030-1/

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.