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List:       full-disclosure
Subject:    [FD] CollabNet Subversion Edge insecure password change
From:       Oliver-Tobias Ripka <otr () bockcay ! de>
Date:       2015-06-29 10:04:25
Message-ID: 20150629100425.GF13114 () tortuga
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# Vuln Title: The CollabNet Subversion Edge management frontend does not require
# current password upon password change
#
# Date: 28.06.2015
# Author: otr
# Software Link: https://www.open.collab.net/downloads/svnedge
# Vendor: CollabNet
# Version: 4.0.11
# Tested on: Fedora Linux
# Type: Insecure password change

# Risk: Medium
# Status: public/fixed
# Fixed version: 5.0

Timeline:

2014-10-09 Flaw Discovered
2014-10-20 Vendor contacted
2014-10-21 Vendor response
2014-12-08 Vendor fix proposal
2014-12-08 Extension of embargo to 19.4.2015
2015-05-04 Extension of embargo until release of version 5.0
2015-05-18 Release of version 5.0 and public disclosure

Summary:

The management frontend does not require the old password for changing the
password to a new one. An authenticated attacker may perform password setting
attacks via XSRF without knowing the current password. An attacker that stole a
Session ID (cookie) is able to gain persistent access by changing the password.

Fix proposal:

A password change should require the old password to be provided.

Vendor fix:

When a user is changing their password, they are now required to enter their
current password.

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