exploit the possibilities

Open-Xchange AppSuite 7.2.2 Phishing / Data Injection

Open-Xchange AppSuite 7.2.2 Phishing / Data Injection
Posted Aug 1, 2013
Authored by Martin Braun

Open-Xchange AppSuite versions 7.2.2 and below suffer from phishing and data injection vulnerabilities.

tags | exploit, vulnerability
advisories | CVE-2013-4790
MD5 | ed376ed1bc928ae93e2860e6eb73bc64

Open-Xchange AppSuite 7.2.2 Phishing / Data Injection

Change Mirror Download
Product: Open-Xchange AppSuite
Vendor: Open-Xchange GmbH

Internal reference: 27473 (Bug ID)
Vulnerability type: Phishing / Data injection
Vulnerable version: 7.2.2 and earlier
Vulnerable component: backend
Fixed version: 7.2.2-rev9, 7.2.1-rev10, 7.2.0-rev11, 7.0.2-rev14
Solution status: Fixed by Vendor
Vendor notification: 2013-07-11
Solution date: 2013-07-18
Public disclosure: 2013-07-31
CVE reference: CVE-2013-4790
CVSSv2: 5.1 (AV:N/AC:M/Au:S/C:P/I:N/A:N/E:U/RL:U/RC:C/CDP:LM/TD:H/CR:ND/IR:ND/AR:ND)

Vulnerability Details:
To provide easy integration of third party mail accounts, Open-Xchange uses several auto-discovery features. Besides a generic lookup for most prominent mail providers, information of existing external mail accounts of other users, including users from other contexts, is used to discover potential mail server settings. To validate the discovered settings, a login attempt is performed at the discovered mail server. This attack becomes possible if the victim is using OX AppSuite UI, using the OX6 UI does not trigger this vulnerability.

Risk:
An attacker can inject incorrect host information for popular mail services by providing misleading server settings. These settings are then used to automatically validate other users external mail accounts which includes transferring their external mail accounts login name and password. An attacker can potentially intercept user credentials for external mail accounts by logging all authentication data sent to the rogue IMAP server.

Steps to reproduce:
As User A (attacker)
1. Login
2. Switch to Settings -> Mail and Social accounts
3. Add a new mail account, use "manual mode"
4. Enter foo@my-mail-host.io as mail address, the attackers evil IMAP servers IP or hostname as server name and provide valid credentials for that evil server
5. Save the account

As User B (victim)
1. Login
2. Switch to Settings -> Mail and Social accounts
3. Add a new mail account, use "automatic mode"
4. Enter "bar@my-mail-host.io" as address and provide your password
5. Save

Proof of concept:
A login request is performed at the evil IMAP server, not at the domain related to the entered mail address.

92.224.190.xxx = OX server
37.235.49.xxx = Evil IMAP server

#
T 92.224.190.xxx:40622 -> 37.235.49.xxx:143 [A]
.F#...7......(..}.....hK..%...N..{dp..."45._r.....4>......v.​.Zs8...C(..D.I.V..3..YboF......
######
T 37.235.49.xxx:143 -> 92.224.190.xxx:47458 [AP]
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE STARTTLS LOGINDISABLED] Dovecot ready...
##
T 92.224.190.xxx:47458 -> 37.235.49.xxx:143 [AP]
A11 LOGOUT..


Solution:
Users should update to the latest available patch releases 7.2.2-rev9, 7.2.1-rev10, 7.2.0-rev11, 7.0.2-rev14.

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

September 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    1 Files
  • 2
    Sep 2nd
    38 Files
  • 3
    Sep 3rd
    30 Files
  • 4
    Sep 4th
    15 Files
  • 5
    Sep 5th
    12 Files
  • 6
    Sep 6th
    17 Files
  • 7
    Sep 7th
    3 Files
  • 8
    Sep 8th
    1 Files
  • 9
    Sep 9th
    24 Files
  • 10
    Sep 10th
    22 Files
  • 11
    Sep 11th
    22 Files
  • 12
    Sep 12th
    15 Files
  • 13
    Sep 13th
    5 Files
  • 14
    Sep 14th
    2 Files
  • 15
    Sep 15th
    1 Files
  • 16
    Sep 16th
    11 Files
  • 17
    Sep 17th
    14 Files
  • 18
    Sep 18th
    0 Files
  • 19
    Sep 19th
    0 Files
  • 20
    Sep 20th
    0 Files
  • 21
    Sep 21st
    0 Files
  • 22
    Sep 22nd
    0 Files
  • 23
    Sep 23rd
    0 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close