IBM AIX up to 6.1.2 Access Restriction Remote Code Execution

CVSS Meta Temp Score
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CTI Interest Score
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9.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as very critical, has been found in IBM AIX up to 6.1.2. The affected element is an unknown function of the component Access Restriction. Performing a manipulation results in Remote Code Execution. This vulnerability is identified as CVE-2009-3517. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in IBM AIX up to 6.1.2 (Operating System). This affects an unknown functionality of the component Access Restriction. The manipulation with an unknown input leads to a remote code execution vulnerability. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares via unspecified vectors.

The issue has been introduced in 08/01/2004. The weakness was released 10/01/2009 (Website). It is possible to read the advisory at www-01.ibm.com. This vulnerability is uniquely identified as CVE-2009-3517 since 10/01/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/16/2025). It is expected to see the exploit prices for this product decreasing in the near future.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1887 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 39026 (AIX 6.1 : bos.net.nfs.client (U823848)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120736 (IBM AIX NFS nfs_portmon and Kerberos Vulnerabilities).

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 Tenable (39026), SecurityFocus (BID 36544†) and Vulnerability Center (SBV-34234†). Entry connected to this vulnerability is available at VDB-50330. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.8
VulDB Temp Score: 9.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 39026
Nessus Name: AIX 6.1 : bos.net.nfs.client (U823848)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/01/2004 🔍
09/29/2009 +1885 days 🔍
10/01/2009 +2 days 🔍
10/01/2009 +0 days 🔍
10/01/2009 +0 days 🔍
10/01/2009 +0 days 🔍
01/17/2012 +838 days 🔍
03/18/2015 +1156 days 🔍
02/16/2025 +3623 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: www-01.ibm.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-3517 (🔍)
GCVE (CVE): GCVE-0-2009-3517
GCVE (VulDB): GCVE-100-50331

OVAL: 🔍

SecurityFocus: 36544 - IBM AIX 'nfs_portmon' Authentication Bypass Vulnerability
Vulnerability Center: 34234 - IBM AIX nfs.ext Improper Use of nfs_portmon Setting Allows Remote Access to NFSv4 Shares, High
Vupen: ADV-2009-2788

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 02/16/2025 07:38
Changes: 03/18/2015 15:15 (54), 04/19/2017 10:31 (12), 08/23/2021 12:26 (2), 02/16/2025 07:38 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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