VDB-11176 · CVE-2013-4475 · BID 63646

Samba up to 4.1.0 Access Control access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability was found in Samba up to 4.1.0 (File Transfer Software). It has been declared as problematic. This vulnerability affects an unknown code of the component Access Control Handler. 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, and integrity. CVE summarizes:

Samba 3.x before 3.6.20, 4.0.x before 4.0.11, and 4.1.x before 4.1.1, when vfs_streams_depot or vfs_streams_xattr is enabled, allows remote attackers to bypass intended file restrictions by leveraging ACL differences between a file and an associated alternate data stream (ADS).

The weakness was released 11/11/2013 by Hemanth Thummala as CVE-2013-4475.html as confirmed advisory (Website). The advisory is shared for download at samba.org. The public release was coordinated with the vendor. This vulnerability was named CVE-2013-4475 since 06/12/2013. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 71083 (Fedora 20 : samba-4.1.1-1.fc20 (2013-21088)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185124 (HPE HP-UX CIFS-Server Multiple Vulnerabilities (HPSBUX03574)).

Upgrading to version 3.6.20, 4.0.11 or 4.1.1 eliminates this vulnerability. The upgrade is hosted for download at samba.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (71083). Entries connected to this vulnerability are available at 7563, 11174, 11440 and 12681.

Productinfo

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Name

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
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
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71083
Nessus Name: Fedora 20 : samba-4.1.1-1.fc20 (2013-21088)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892812
OpenVAS Name: Debian Security Advisory DSA 2812-1 (samba - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Samba 3.6.20/4.0.11/4.1.1

Timelineinfo

06/12/2013 🔍
11/11/2013 +152 days 🔍
11/11/2013 +0 days 🔍
11/12/2013 +1 days 🔍
11/13/2013 +1 days 🔍
11/18/2013 +5 days 🔍
11/26/2013 +8 days 🔍
06/02/2021 +2745 days 🔍

Sourcesinfo

Product: samba.org

Advisory: CVE-2013-4475.html
Researcher: Hemanth Thummala
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-4475 (🔍)
OVAL: 🔍
IAVM: 🔍

Vulnerability Center: 42249 - Samba 3.2.0, 4.0 and 4.1 Remote Security Bypass Vulnerability Due to Improper ACL File Checks, Medium
SecurityFocus: 63646
Secunia: 55638 - Samba Insecure File Permissions and Security Bypass Security Issues, Not Critical
OSVDB: 99705

See also: 🔍

Entryinfo

Created: 11/18/2013 09:01
Updated: 06/02/2021 09:14
Changes: 11/18/2013 09:01 (83), 06/07/2017 16:24 (1), 06/02/2021 09:14 (3)
Complete: 🔍

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