IBM AIX 6.1/7.1 FTP Server access control

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in IBM AIX 6.1/7.1. The impacted element is an unknown function of the component FTP Server. This manipulation causes access control. This vulnerability is registered as CVE-2012-4845. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in IBM AIX 6.1/7.1 (Operating System). Affected by this vulnerability is an unknown functionality of the component FTP Server. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality. The summary by CVE is:

The FTP client in IBM AIX 6.1 and 7.1, and VIOS 2.2.1.4-FP-25 SP-02, does not properly manage privileges in an RBAC environment, which allows attackers to bypass intended file-read restrictions by leveraging the setuid installation of the ftp executable file.

The issue has been introduced in 11/09/2007. The weakness was published 10/18/2012 as CVE-2012-4845 as confirmed advisory (IBM Knowledge Base). The advisory is shared at aix.software.ibm.com. This vulnerability is known as CVE-2012-4845 since 09/06/2012. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1805 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 71163 (AIX 6.1 TL 9 : bos.mp64 (U854672)), 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 120859 (IBM AIX FTP File Restrictions Bypass Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at aix.software.ibm.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (79279), Tenable (71163), SecurityFocus (BID 56134†), OSVDB (86417†) and Secunia (SA51009†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71163
Nessus Name: AIX 6.1 TL 9 : bos.mp64 (U854672)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
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Exposure Time: 🔍

Patch: aix.software.ibm.com

Timelineinfo

11/09/2007 🔍
09/06/2012 +1763 days 🔍
10/18/2012 +42 days 🔍
10/18/2012 +0 days 🔍
10/18/2012 +0 days 🔍
10/18/2012 +0 days 🔍
10/20/2012 +2 days 🔍
10/20/2012 +0 days 🔍
10/20/2012 +0 days 🔍
10/21/2012 +1 days 🔍
10/22/2012 +1 days 🔍
12/03/2013 +407 days 🔍
12/29/2024 +4044 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: CVE-2012-4845
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-4845 (🔍)
GCVE (CVE): GCVE-0-2012-4845
GCVE (VulDB): GCVE-100-6805

OVAL: 🔍
IAVM: 🔍

X-Force: 79279 - IBM AIX FTP privilege escalation, Medium Risk
SecurityFocus: 56134 - IBM AIX FTP Client CVE-2012-4845 Security Bypass Vulnerability
Secunia: 51009 - IBM AIX FTP Server UID Switching Vulnerability, Less Critical
OSVDB: 86417
SecurityTracker: 1027681 - IBM AIX FTP Client Lets Remote Authenticated Users Access Restricted Files
Vulnerability Center: 36770 - IBM AIX and VIOS Remote Security Bypass in the FTP client due to a setuid Issue, Medium

Entryinfo

Created: 10/22/2012 18:07
Updated: 12/29/2024 20:23
Changes: 10/22/2012 18:07 (86), 04/19/2017 11:57 (4), 04/18/2021 15:53 (3), 12/29/2024 20:23 (16)
Complete: 🔍
Committer:
Cache ID: 216::103

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