CVE-2016-3953

The sample web application in web2py before 2.14.2 might allow remote attackers to execute arbitrary code via vectors involving use of a hardcoded encryption key when calling the session.connect function.

CVSS v3.1 GitHub

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 NVD

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

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

3.34% chance of exploitation in the next 30 days, 88th percentile

Published

2018-02-06

Updated

2024-08-06

Proof-of-concept exploits (1)

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

Security advisories

• https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957
• web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py
• advisories/GHSA-q2rq-qgcf-m22w
• https://usn.ubuntu.com/4030-1

References

• CVE Record
• NVD entry