2009-2534 | RealNetworks Helix Server input validation (BID-35732 / XFDB-51843)

By Max On Aug 12, 2021

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8	$0-$5k	0.35

A vulnerability has been found in RealNetworks Helix Server and classified as problematic. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-20. As an impact it is known to affect availability.

The weakness was disclosed 07/14/2009 by CORE Security with CORE Security Technologies (Website). The advisory is shared for download at vupen.com. This vulnerability was named CVE-2009-2534 since 07/17/2009. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Core Security in Python and been published immediately after the advisory. It is declared as proof-of-concept. It is possible to download the exploit at securityfocus.com. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 40350 (RealNetworks Helix Server Misc..

Upgrading to version 12.0.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8672.

The vulnerability is also documented in the databases at SecurityFocus (BID 35732), X-Force (51843), Vulnerability Center (SBV-22973) and Tenable (40350). The entry 49071 is pretty similar.

Vendor

RealNetworks

Name

Helix Server

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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Class: Privilege escalation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Core Security
Programming Language: 🔍
Download: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 40350
Nessus Name: RealNetworks Helix Server Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Helix Server 12.0.0
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

07/14/2009 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/17/2009 +2 days 🔍
07/17/2009 +0 days 🔍
07/20/2009 +3 days 🔍
07/20/2009 +0 days 🔍
07/28/2009 +7 days 🔍
03/18/2015 +2059 days 🔍
08/12/2021 +2339 days 🔍Vendor: https://www.realnetworks.com/