CVE-2016-3957
Web2py Pickle Serialization Remote Code Execution Vulnerability
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.
INFO
Published Date :
Feb. 6, 2018, 6:29 p.m.
Last Modified :
June 21, 2019, 10:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2016-3957 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-3957.
| URL | Resource |
|---|---|
| https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/ | Exploit Technical Description Third Party Advisory |
| https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200 | Third Party Advisory |
| https://usn.ubuntu.com/4030-1/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
web2py/web2py @ e94946d
Makefile Python CSS JavaScript HTML Shell PowerShell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-3957 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-3957 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 21, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4030-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 24, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/ No Types Assigned https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/ Exploit, Technical Description, Third Party Advisory Changed Reference Type https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200 No Types Assigned https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200 Third Party Advisory Added CWE CWE-502 Added CPE Configuration OR *cpe:2.3:a:web2py:web2py:*:*:*:*:*:*:*:* versions up to (excluding) 2.14.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-3957 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-3957
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
2.07 }} -0.03%
score
0.87843
percentile