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

CVSS Meta Temp Score

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Current Exploit Price (≈)

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CTI Interest Score

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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.




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

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

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 64327
Nessus Name: AIX 6.1 TL 0 : libc (IZ50139)
Nessus File: 🔍
Nessus Risk: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

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/

Advisory: securitytracker.com
Researcher: Hector X. Monsegur
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-1786 (🔍)

SecurityFocus: 35034 – IBM AIX ‘MALLOCDEBUG’ File Overwrite Vulnerability
Secunia: 35146 – IBM AIX libc MALLOCDEBUG Privilege Escalation Vulnerability, Less Critical
X-Force: 50636
SecurityTracker: 1022261 – IBM AIX libc MALLOCDEBUG File Overwrite Bug Lets Local Users Gain Root Privileges
Vulnerability Center: 22828 – IBM AIX 5.3 and 6.1 Local File Manipulation Vulnerability via a Symlink Attack, Medium
OSVDB: 54617 – IBM AIX libc MALLOCDEBUG Environment Variable Local Privilege Escalation
Vupen: ADV-2009-1380

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Created: 03/17/2015 23:38
Updated: 08/11/2021 10:48
Changes: (3) source_nessus_risk exploit_price_0day vulnerability_cvss2_nvd_basescore
Complete: 🔍


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