2009-1786 | IBM AIX Subsystem race condition (BID-35034 / XFDB-50636)

By Max On Aug 11, 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.
7.9	$0-$5k	0.00

A vulnerability was found in IBM AIX 5.3/6.1 (Operating System). It has been rated as critical. This issue affects an unknown code of the component Subsystem. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. Impacted is confidentiality, integrity, and availability.

The issue has been introduced in 08/01/2004. The weakness was released 05/20/2009 by Hector X. Monsegur (Website). It is possible to read the advisory at securitytracker.com. The identification of this vulnerability is CVE-2009-1786 since 05/26/2009. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Hector X. Monsegur in Shell File and been published 9 years after the advisory. It is declared as proof-of-concept. The exploit is available at securityfocus.com. The vulnerability was handled as a non-public zero-day exploit for at least 1754 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 64327 (AIX 6.1 TL 0 : libc (IZ50139)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 35034), X-Force (50636), Secunia (SA35146), SecurityTracker (ID 1022261) and Vulnerability Center (SBV-22828). Entries connected to this vulnerability are available at 66963, 49263 and 93536.

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VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.4
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

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Class: Race condition
CWE: CWE-362
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Hector X. Monsegur
Programming Language: 🔍
Download: 🔍

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Nessus ID: 64327
Nessus Name: AIX 6.1 TL 0 : libc (IZ50139)
Nessus File: 🔍
Nessus Risk: 🔍
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Threat Intelligenceinfoedit

Interest: 🔍
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Active APT Groups: 🔍Recommended: no mitigation known
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08/01/2004 🔍
05/19/2009 +1752 days 🔍
05/19/2009 +0 days 🔍
05/20/2009 +1 days 🔍
05/20/2009 +0 days 🔍
05/20/2009 +0 days 🔍
05/20/2009 +0 days 🔍
05/26/2009 +5 days 🔍
05/26/2009 +0 days 🔍
07/14/2009 +49 days 🔍
01/30/2013 +1296 days 🔍
03/17/2015 +776 days 🔍
11/04/2016 +598 days 🔍
11/04/2016 +0 days 🔍
08/11/2021 +1741 days 🔍Vendor: https://www.ibm.com/