VDB-102263 · CVE-2017-4961 · GCVE-0-2017-4961

Cloud Foundry up to 260.x/261.2 Director VM 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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Cloud Foundry up to 260.x/261.2. It has been rated as critical. The impacted element is an unknown function of the component Director VM. The manipulation leads to access control. This vulnerability is listed as CVE-2017-4961. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cloud Foundry up to 260.x/261.2 (Cloud Software) and classified as critical. This issue affects an unknown function of the component Director VM. 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:

An issue was discovered in Cloud Foundry Foundation BOSH Release 261.x versions prior to 261.3 and all 260.x versions. In certain cases an authenticated Director user can provide a malicious checksum that could allow them to escalate their privileges on the Director VM, aka "BOSH Director Shell Injection Vulnerabilities."

The bug was discovered 05/01/2017. The weakness was presented 06/13/2017 (Website). It is possible to read the advisory at cloudfoundry.org. The identification of this vulnerability is CVE-2017-4961 since 12/29/2016. The attack may be initiated remotely. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 43 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 261.3 eliminates this vulnerability.

See VDB-102264 and VDB-102259 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Cloud Software

Name

Cloud Foundry

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Cloud Foundry 261.3

Timelineinfo

12/29/2016 🔍
05/01/2017 +123 days 🔍
06/13/2017 +43 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
10/16/2019 +855 days 🔍

Sourcesinfo

Advisory: cloudfoundry.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-4961 (🔍)
GCVE (CVE): GCVE-0-2017-4961
GCVE (VulDB): GCVE-100-102263
See also: 🔍

Entryinfo

Created: 06/13/2017 16:57
Updated: 10/16/2019 11:54
Changes: 06/13/2017 16:57 (59), 10/16/2019 11:54 (2)
Complete: 🔍
Cache ID: 216::103