IBM AIX 5.3/6.1 LIB_INIT_DBG access control

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in IBM AIX 5.3/6.1. Impacted is an unknown function in the library LIB_INIT_DBG. Performing a manipulation results in access control. This vulnerability was named CVE-2009-2669. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in IBM AIX 5.3/6.1 (Operating System). It has been classified as critical. This affects an unknown code in the library LIB_INIT_DBG. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A certain debugging component in IBM AIX 5.3 and 6.1 does not properly handle the (1) _LIB_INIT_DBG and (2) _LIB_INIT_DBG_FILE environment variables, which allows local users to gain privileges by leveraging a setuid-root program to create an arbitrary root-owned file with world-writable permissions, related to libC.a (aka the XL C++ runtime library) in AIX 5.3 and libc.a in AIX 6.1.

The issue has been introduced in 08/01/2004. The weakness was presented 08/05/2009 by Karol Wiesek (Website). It is possible to read the advisory at labs.idefense.com. This vulnerability is uniquely identified as CVE-2009-2669 since 08/05/2009. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed by Marco Ivaldi in Shell File and been published 2 months after the advisory. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1830 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 64344 (AIX 6.1 TL 3 : libC (IZ56206)), 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 X-Force (52253), Exploit-DB (9645), Tenable (64344), SecurityFocus (BID 35934†) and Secunia (SA36156†). See VDB-48311 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.3
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Marco Ivaldi
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 64344
Nessus Name: AIX 6.1 TL 3 : libC (IZ56206)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/01/2004 🔍
08/04/2009 +1829 days 🔍
08/04/2009 +0 days 🔍
08/05/2009 +1 days 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
09/11/2009 +37 days 🔍
09/11/2009 +0 days 🔍
01/30/2013 +1237 days 🔍
03/18/2015 +777 days 🔍
06/05/2024 +3367 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: labs.idefense.com⛔
Researcher: Karol Wiesek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-2669 (🔍)
GCVE (CVE): GCVE-0-2009-2669
GCVE (VulDB): GCVE-100-49263
X-Force: 52253
SecurityFocus: 35934 - IBM AIX '_LIB_INIT_DBG' and '_LIB_INIT_DBG_FILE' File Creation Vulnerability
Secunia: 36156 - IBM AIX libC XL C++ Runtime Library Privilege Escalation, Less Critical
Vulnerability Center: 23069 - IBM AIX INIT DBG FILE Local Arbitrary Code Execution with Superuser Privileges Vulnerability, High
Vupen: ADV-2009-2151

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

Entryinfo

Created: 03/18/2015 15:15
Updated: 06/05/2024 09:43
Changes: 03/18/2015 15:15 (62), 02/12/2017 13:09 (22), 08/13/2021 11:52 (3), 06/05/2024 09:43 (14)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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