XFS acl 2.2.47 Symbolic Links access control

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in XFS acl 2.2.47. Affected by this vulnerability is an unknown functionality of the component Symbolic Links. The manipulation leads to access control. This vulnerability is listed as CVE-2009-4411. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in XFS acl 2.2.47. This issue affects an unknown code of the component Symbolic Links. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The (1) setfacl and (2) getfacl commands in XFS acl 2.2.47, when running in recursive (-R) mode, follow symbolic links even when the --physical (aka -P) or -L option is specified, which might allow local users to modify the ACL for arbitrary files or directories via a symlink attack.

The weakness was presented 12/23/2009 (Website). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2009-4411 since 12/23/2009. The exploitation is known to be difficult. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 44360 (openSUSE Security Update : acl (acl-1803)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165237 (SUSE Security Update for Multiple Packages (SUSE-SR:2010:002)).

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 (55004), Tenable (44360), SecurityFocus (BID 37455†), OSVDB (61302†) and Secunia (SA37907†). See VDB-51615 and VDB-50820 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.9
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 44360
Nessus Name: openSUSE Security Update : acl (acl-1803)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69578
OpenVAS Name: Slackware Advisory SSA:2011-108-01 acl
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/23/2009 🔍
12/23/2009 +0 days 🔍
12/23/2009 +0 days 🔍
12/23/2009 +0 days 🔍
12/23/2009 +0 days 🔍
12/23/2009 +0 days 🔍
12/24/2009 +0 days 🔍
01/04/2010 +11 days 🔍
02/02/2010 +29 days 🔍
03/18/2015 +1870 days 🔍
08/30/2021 +2357 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4411 (🔍)
GCVE (CVE): GCVE-0-2009-4411
GCVE (VulDB): GCVE-100-51293
X-Force: 55004
SecurityFocus: 37455 - XFS ACL 'setfacl' and 'getfacl' Symbolic Link Handling Security Bypass Vulnerability
Secunia: 37907 - XFS Acl Recursive Symlink Processing Security Issue, Less Critical
OSVDB: 61302 - XFS Acl Multiple Operation Recursive Symlink Handling Local Privilege Escalation
Vulnerability Center: 24504 - XFS ACL 2.2.46-2.2.47 Local Security Bypass Vulnerability via Symbolic-Link Attack, Low

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/30/2021 10:02
Changes: 03/18/2015 15:15 (65), 02/19/2017 09:41 (13), 08/30/2021 10:02 (3)
Complete: 🔍
Cache ID: 216::103

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