Security restrictions bypass in web2py

Published: 2019-06-28

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-10321
CWE-ID	CWE-254
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	web2py Web applications / Other software
Vendor	web2py

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU18928

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-10321

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform password brute-force attacks.

The vulnerability exist due to the software does not properly check if a host is denied before password verification. A remote non-authenticated attacker can perform a password brute-force attack on the targeted system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

web2py: 2.0.0 - 2.14.5

External links

http://github.com/web2py/web2py/commit/944d8bd8f3c5cf8ae296fc03d149056c65358426
http://github.com/web2py/web2py/issues/1585#issuecomment-284317919
http://usn.ubuntu.com/4030-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.