Samba 4.0.0 Permission access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Samba 4.0.0. This affects an unknown function of the component Permission Handler. This manipulation causes access control. This vulnerability is registered as CVE-2013-0172. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Samba 4.0.0 (File Transfer Software). Affected by this vulnerability is some unknown functionality of the component Permission 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. The summary by CVE is:

Samba 4.0.x before 4.0.1, in certain Active Directory domain-controller configurations, does not properly interpret Access Control Entries that are based on an objectClass, which allows remote authenticated users to bypass intended restrictions on modifying LDAP directory objects by leveraging (1) objectClass access by a user, (2) objectClass access by a group, or (3) write access to an attribute.

The weakness was published 01/15/2013 by Andrew Bartlett with Samba as CVE-2013-0172 as confirmed advisory (Website). The advisory is shared at samba.org. The public release has been coordinated with the project team. This vulnerability is known as CVE-2013-0172 since 12/06/2012. The exploitation appears to be easy. The attack can be launched remotely. A single authentication is required for 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 63561 (Samba 4.x < 4.0.1 AD DC LDAP Directory Objects Security Bypass), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..

Upgrading to version 4.0.1 eliminates this vulnerability. The upgrade is hosted for download at samba.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at samba.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (81326), Tenable (63561), SecurityFocus (BID 57329†), OSVDB (89180†) and Secunia (SA51840†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 63561
Nessus Name: Samba 4.x < 4.0.1 AD DC LDAP Directory Objects Security Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 865246
OpenVAS Name: Fedora Update for samba4 FEDORA-2013-0859
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Samba 4.0.1
Patch: samba.org

Timelineinfo

12/06/2012 🔍
01/15/2013 +40 days 🔍
01/15/2013 +0 days 🔍
01/15/2013 +0 days 🔍
01/15/2013 +0 days 🔍
01/15/2013 +0 days 🔍
01/16/2013 +1 days 🔍
01/16/2013 +0 days 🔍
01/17/2013 +1 days 🔍
01/17/2013 +0 days 🔍
01/21/2013 +4 days 🔍
04/22/2021 +3013 days 🔍

Sourcesinfo

Product: samba.org

Advisory: CVE-2013-0172
Researcher: Andrew Bartlett
Organization: Samba
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0172 (🔍)
GCVE (CVE): GCVE-0-2013-0172
GCVE (VulDB): GCVE-100-7345
X-Force: 81326
SecurityFocus: 57329 - Samba CVE-2013-0172 Remote Security Bypass Vulnerability
Secunia: 51840 - Samba objectClass LDAP Directory Object Access Bypass Vulnerability, Less Critical
OSVDB: 89180
SecurityTracker: 1028006 - Samba Active Directory Domain Controller Access Control Flaw Lets Remote Authenticated Gain Write Access to Certain Objects
Vulnerability Center: 38140 - Samba Remote Authenticated Restriction Bypass Leading to Write Privileges, Medium

Entryinfo

Created: 01/17/2013 14:55
Updated: 04/22/2021 08:47
Changes: 01/17/2013 14:55 (82), 04/24/2017 09:43 (5), 04/22/2021 08:47 (3)
Complete: 🔍
Committer:
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!