full-disclosure - [FD] Verint Impact 360 onLogin open redirect

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Message-ID: <CANwWu2FMCx4B-H6vYtmsCyV=mkAOyQLOetXdVYohg1j_FBHRBw@mail.gmail.com>
Date: Mon, 13 Jul 2020 19:33:03 +0000
From: Ryan Delaney <ryan.delaney@...sp.org>
To: fulldisclosure@...lists.org
Subject: [FD] Verint Impact 360 onLogin open redirect

<!--
# Exploit Title: Verint Impact 360 onLogin open redirect
# Date: 7-13-2020
# Exploit Author: Ryan Delaney
# Author Contact: ryan.delaney@...sp.org
# Author LinkedIn: https://www.linkedin.com/in/infosecrd/
# Vendor Homepage: https://www.verint.com/
# Software Link:
https://www.verint.com/engagement/our-offerings/solutions/workforce-optimization/
# Version: Impact 360 v15.1
# Tested on: Impact 360 v15.1
# CVE: CVE-2019-12783

1. Description

An issue was discovered in Verint Impact 360 15.1. At wfo/control/signin,
the rd parameter can accept a URL, to which users will be redirected after
a successful login. In combination with CVE-2019-12784, this may allow
attackers to compromise credentials via bruteforce even if the site is not
accessible to the attacker due to firewall rules or network configuration.

2. Mitigation

Create firewall rules that drop outbound traffic to unknown hosts with a
referrer of the Impact 360 system.
Request a patch from Verint. Verint has not patched this vulnerability to
my knowledge, despite having been made aware of it over a year ago.

3. PoC

Withheld due to possible legal threat.

4. Timeline

Discovered: 6-7-2019
CVE assigned: 6-10-2019
First contact: 6-14-2019 (no response)
Follow-up 1: 6-25-2019
    Reply received: 7-9-2019 (stating that the responsible disclosure line
was for the community edition and report would be forwarded to enterprise)
Follow-up 2: 7-16-2019
    Reply received: 7-19-2019 (cc'ing another individual and asking them to
follow up with me)
Follow-up 3: 8-30-2019 (no response)
Follow-up 4: 9-4-2019 (no response)
Follow-up 5: 9-11-2019 (no response)
Follow-up 6: 1-6-2020 (notification of intent to disclose in 90 days, no
response)
Follow-up 7: 3-5-2020 (notification of intent to disclose in 30 days)
    Reply received: 3-6-2020 (requesting addition delay for disclosure)
Follow-up 8: 3-27-2020 (no response)
Follow-up 9: 5-18-2020 (no response)
Follow-up 10: 6-25-2020 (notification of intent to disclose, requesting
confirmation that legal action will not be pursued, no response)
Published: 7-13-2020 (260 business days after initial report)

-->

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