IBM Tivoli Storage Manager Windows Client Resilient File System Stored 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.
5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in IBM Tivoli Storage Manager Windows Client. This affects an unknown function of the component Resilient File System. The manipulation leads to access control (Stored). This vulnerability is listed as CVE-2013-5371. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in IBM Tivoli Storage Manager Windows Client (Backup Software) (version now known). This issue affects some unknown processing of the component Resilient File System. The manipulation with an unknown input leads to a access control vulnerability (Stored). Using CWE to declare the problem leads to CWE-264. Impacted is availability. The summary by CVE is:

The client in IBM Tivoli Storage Manager (TSM) 6.3.1 and 6.4.0 on Windows does not preserve permissions of Resilient File System (ReFS) files across backup and restore operations, which allows local users to bypass intended access restrictions via standard filesystem operations.

The weakness was presented 01/22/2014 as swg21662608 as confirmed advisory (Website). The advisory is shared at www-01.ibm.com. The identification of this vulnerability is CVE-2013-5371 since 08/22/2013. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

During TSM Windows client file restore and retrieve operations to an ReFS file system, security permissions of files are not restored or retrieved, even when SKIPNTSECURITYPERMISSIONS NO is in effect (NO is the default value). Instead, the restored or retrieved files will have default permissions. If the default permissions are more permissive, an unauthorized user can gain access to and modify the restored or retrieved files.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 72203 (IBM Tivoli Storage Manager Client 6.3.1.x < 6.3.2.0 / 6.4.x < 6.4.1.0 ReFS Insecure File Permissions), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Applying the patch IC92933 is able to eliminate this problem. The bugfix is ready for download at 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 (86661), Tenable (72203), SecurityFocus (BID 65102†), OSVDB (102365†) and Secunia (SA56585†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.4

VulDB Base Score: 6.2
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 72203
Nessus Name: IBM Tivoli Storage Manager Client 6.3.1.x < 6.3.2.0 / 6.4.x < 6.4.1.0 ReFS Insecure File Permissions
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: IC92933

Timelineinfo

08/22/2013 🔍
01/22/2014 +153 days 🔍
01/22/2014 +0 days 🔍
01/22/2014 +0 days 🔍
01/22/2014 +0 days 🔍
01/22/2014 +0 days 🔍
01/23/2014 +1 days 🔍
01/24/2014 +1 days 🔍
01/29/2014 +5 days 🔍
03/11/2014 +41 days 🔍
06/08/2021 +2646 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: swg21662608
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-5371 (🔍)
GCVE (CVE): GCVE-0-2013-5371
GCVE (VulDB): GCVE-100-12053
X-Force: 86661 - IBM Tivoli Storage Manager information disclosure, Low Risk
SecurityFocus: 65102 - IBM Tivoli Storage Manager Client CVE-2013-5371 Insecure File Permissions Vulnerability
Secunia: 56585 - IBM Tivoli Storage Manager Client File Permissions Security Issue, Not Critical
OSVDB: 102365
Vulnerability Center: 43551 - IBM Tivoli Storage Manager Local Security Bypass due to not Preserving Permissions files in Backup and Restore, Low

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/24/2014 10:20
Updated: 06/08/2021 15:21
Changes: 01/24/2014 10:20 (53), 05/22/2017 11:09 (31), 06/08/2021 15:21 (2)
Complete: 🔍
Cache ID: 216:9F2:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!