Information disclosure in the Safemode gem for Ruby

1) Information disclosure

EUVDB-ID: #VU10736

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-3693

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists due to a provisioning template containing `inspect` when initialized with a delegate object that is a Rails controller. A remote context-dependent attacker can use the inspect method and access sensitive information.

Mitigation

Update to version 1.2.4.

Vulnerable software versions

The Safemode gem for Ruby: 1.0.0 - 1.2.3

External links

http://github.com/svenfuchs/safemode/commit/0f764a1720a3a68fd2842e21377c8bfad6d7126f

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.