Lucene search

CERTVU:882286

HistoryAug 21, 2013 - 12:00 a.m.

Samsung Web Viewer for Samsung DVR allows authentication bypass and password disclosure

2013-08-2100:00:00

www.kb.cert.org

899

7.6 High

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:H/Au:N/C:C/I:C/A:C

0.007 Low

EPSS

Percentile

80.3%

JSON

Overview

Samsung Web Viewer for Samsung DVR contains multiple vulnerabilities including: Cleartext Storage in a File or on Disk (CWE-313) and Authentication Bypass by Assumed-Immutable Data (CWE-302).

Description

CWE-313**: Cleartext Storage in a File or on Disk -**CVE-2013-3585

Web Viewer for Samsung DVR stores user credentials in plaintext allowing an attacker to parse saved credentials on the user setup webpage.

CWE-302**: Authentication Bypass by Assumed-Immutable Data -**CVE-2013-3586
Web Viewer for Samsung DVR contains a vulnerability in its cookie-handling procedure that accepts any input as a valid session ID if placed after SessionID=. This allows an attacker to send a specially crafted cookie containing an malicious SessionID to the web server which bypasses authentication and can provide access to internal pages, including camera controls and account settings.

For example:
headers = { "Cookie": "=", "Accept": "text/plain"}

The CVSS score below reflects the authentication bypass attack.

Impact

A remote unauthenticated attacker may be able to retrieve the device’s administrator password, allowing them to directly access the device’s configuration web page or system password configuration files.

Solution

Apply an Update

Samsung has released updated firmware. Please see their statement on the Vendor Information page.

If applying an update is not possible, please consider the following workaround.

Restrict access to the****Samsung Web Viewer for Samsung DVR interface

Restrict access to the Samsung DVR Web Viewer interface to trusted networks. If possible, configure management and transit networks for separate VLANs, or restrict access to the device using IP access lists.

Vendor Information

882286

Filter by status: All Affected Not Affected Unknown

Filter by content: __ Additional information available

__ Sort by: Status Alphabetical

Expand all

Javascript is disabled. Click here to view vendors.

Samsung __ Affected

Notified: June 05, 2013 Updated: October 03, 2013

Status

Affected

Vendor Statement

Pursuant to the security vulnerability issue identified in CERT security notification VU#882286 Samsung Techwin has developed and released firmware to address said vulnerability by removing the cookie upon user log-out.

The affected models, firmware versions and URL links are listed below. The firmware download and installation process is contained in the product User Manual. Technical support is available at 1-877-213-1222 and at the Samsung website, <https://www.samsung-security.com/>

Model

Uploaded F/W

F/W Download URL Link (click F/W tab)

SRD-1640/840

srd-164x-t1-pkg_v1.20h_130905211340.img

https://www.samsung-security.com/en/products/video-recording-and-management/dvr/16-channel/SRD-1640.aspx

SRD-440/442

srd-440x-t1-pkg_v1.20h_130905211626.img

<https://www.samsung-security.com/products/video-recording-and-management/dvr/4-channel/SRD-440.aspx>

SRD-1670/1650/870/850

srd-167x-t7-pkg_v1.30h_130906171722.img

<https://www.samsung-security.com/products/video-recording-and-management/dvr/16-channel/SRD-1670DC.aspx>