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Vulnerability Alert

Multiple QNX Products bpe_decompress Function Stack-Based Buffer Overflow Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:30056
Version:1
First Published:2013 July 12 17:17 GMT
Last Published:2013 July 12 17:17 GMT
Port: Not available
CVE:CVE-2013-2687
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.0
Related Resources:
View related IPS SignatureView related Applied Mitigation Bulletin
 
 
Version Summary:Multiple QNX products contain a vulnerability that could allow an unauthenticated, remote attacker to cause a DoS condition or execute arbitrary code. Updates are available.
 
 
Description
A vulnerability in multiple QNX products could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition.

The vulnerability exists due to insufficient bounds checks on user-supplied input. An attacker could exploit the vulnerability by transmitting crafted UDP packets to the targeted system. A successful exploit could allow the attacker to cause a DoS condition or execute arbitrary code.

Proof-of-concept code that exploits this vulnerability is publicly available.

QNX has not confirmed this vulnerability; however, software updates are available.
 
Warning Indicators
Following products with QNX Neutrino version 6.5 are vulnerable:
  • Phrelay
  • Phwindows
  • Phditto
 
IntelliShield Analysis
To exploit the vulnerability the attacker may need access to trusted or internal networks to be able to transmit UDP packets to the targeted system. This access requirement could limit the likelihood of a successful exploit.
 
Vendor Announcements
QNX has released patch release notes at the following link: rel_5610_1

ICS-CERT has released a security advisory at the following link: ICSA-13-189-01
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to cause a DoS condition or execute arbitrary code with elevated privileges.
 
Technical Information
The vulnerability exists in the bpe_decompress() function found in all the client or server programs used by the affected products. The function fails to perform sufficient bounds checks on user-supplied input while copying data sequentially to two buffers.

An unauthenticated, remote attacker could exploit the vulnerability by transmitting crafted UDP packets to port 4868. A successful exploit could trigger a stack-based buffer overflow error, corrupting memory. The attacker could leverage the memory corruption to cause a DoS condition or execute arbitrary code.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
QNX has released patches at the following link: Patch ID 3336
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
QNX Software Systems Ltd.QNX Neutrino RTOS 6.5.0 Base

Associated Products:
N/A




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