Информационная безопасность
[RU] switch to English

Дополнительная информация

  Cводка уязвимостей безопасности в Web-приложениях (PHP, ASP, JSP, CGI, Perl)

  Multiple vulnerabilities in Vulcan theme for WordPress + WAF bypass

  [SECURITY] [DSA 3295-1] cacti security update

  CVE-2015-3443 XSS in Thycotic Secret Server version 8.6.000000 to 8.8.000004

  ManageEngine Asset Explorer v6.1 - Persistent Vulnerability

From:otr_(at)_bockcay.de <otr_(at)_bockcay.de>
Date:5 июля 2015 г.
Subject:CollabNet Subversion Edge Password Hash Leak

# Vuln Title: The CollabNet Subversion Edge Management frontend user credential
# (hash) leak
# 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: Credential leak
# Risk: Medium
# Status: public/fixed
# Fixed version: 5.0


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


The CollabNet Subversion Edge Management Frontend leaks the unsalted MD5 hash of
password of the currently logged in user via a "POST /csvn/user/index" request.
An attacker that exploits an XSS or has gained a valid session via other means
is able to retrieve the unsalted MD5 hash of the corresponding user and easily
crack the hash in order to know the users password.

Request 1 (set password)
POST /csvn/user/index HTTP/1.1
Host: example.com:4434

Response 1:
HTTP/1.1 302 Found
Location: https://example.com:4434/csvn/user/show/5
Content-Length: 0

Request 2 (generated by clicking edit in the following page; request below the iamge):
GET /csvn/user/edit/5 HTTP/1.1
Host: example.com:4434
Cookie: SESSID=xxxxxxxxxxxxxxxxxxxx;

Response 2 (leaked hash read from DB and echoed back into password change form):
HTTP/1.1 200 OK
<input type="password" id="passwd" name="passwd" value="4db81436059d080afe532cc0cbd1cea5"/>

Fix proposal:

Do not echo the current hash in the database back to the user when changing the
password. Only accept passwords as input fields and no hashes.

Vendor fix:

The leak is plugged.

О сайте | Условия использования
© SecurityVulns, 3APA3A, Владимир Дубровин
Нижний Новгород