CVE-2009-2669

IBM AIX 5.6/6.1 - '_LIB_INIT_DBG' Arbitrary File Overwrite via Libc Debug

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Cierto componente de depuración en IBM AIX v5.3 y v6.1 no proporciona la gestión de los entornos (1) _LIB_INIT_DBG y (2) _LIB_INIT_DBG_FILE, que permite a usuarios locales obtener privilegios utilizando para ello un programa setuid-root para crear un archivo root-owned a su elección con permisos world-writable, relacionados con ibC.a (como la librería XL C++ runtime) en AIX v5.3 y libc.a en AIX v6.1.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-08-05 CVE Reserved
2009-08-05 CVE Published
2009-09-11 First Exploit
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (13)

URL	Tag	Source
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=815	Third Party Advisory
http://secunia.com/advisories/36156	Third Party Advisory
http://www.vupen.com/english/advisories/2009/2151	Vdb Entry

URL	Date	SRC
https://www.exploit-db.com/exploits/9645	2009-09-11

URL	Date	SRC
http://www.ibm.com/support/docview.wss?uid=isg1IZ56203	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ56204	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ56205	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ56206	2009-08-12
http://www.securityfocus.com/bid/35934	2009-08-12

URL	Date	SRC
http://aix.software.ibm.com/aix/efixes/security/libC_advisory.asc	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ54090	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ54091	2009-08-12
http://www.ibm.com/support/docview.wss?uid=isg1IZ54593	2009-08-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ibm Search vendor "Ibm"		Aix Search vendor "Ibm" for product "Aix"				5.3 Search vendor "Ibm" for product "Aix" and version "5.3"		-		Affected
Ibm Search vendor "Ibm"		Aix Search vendor "Ibm" for product "Aix"				6.1 Search vendor "Ibm" for product "Aix" and version "6.1"		-		Affected