Cloud Foundry up to 2.13.x Hashing cryptographic issues

EntryHistoryDiffjsonxmlCTI

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.
7.4	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in Cloud Foundry up to 2.13.x (Cloud Software). This affects some unknown processing of the component Hashing. The manipulation with an unknown input leads to a cryptographic issues vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Cloud Foundry Bits Service Release, versions prior to 2.14.0, uses an insecure hashing algorithm to sign URLs. A remote malicious user may obtain a signed URL and extract the signing key, allowing them complete read and write access to the the Bits Service storage.

The bug was discovered 11/07/2018. The weakness was published 11/09/2018 (Website). It is possible to read the advisory at cloudfoundry.org. This vulnerability is uniquely identified as CVE-2018-15796 since 08/23/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. Required for exploitation is a authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.14.0 eliminates this vulnerability.

Productinfo

Type

Cloud Software

Name

Cloud Foundry

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 8.1
CNA Vector (Dell): 🔍

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: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

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 2.14.0

Timelineinfo

08/23/2018 🔍
11/07/2018 +76 days 🔍
11/09/2018 +2 days 🔍
11/09/2018 +0 days 🔍
11/10/2018 +1 days 🔍
06/05/2023 +1668 days 🔍

Sourcesinfo

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

CVE: CVE-2018-15796 (🔍)

Entryinfo

Created: 11/10/2018 08:02
Updated: 06/05/2023 12:59
Changes: 11/10/2018 08:02 (58), 04/11/2020 11:21 (2), 06/05/2023 12:59 (14)
Complete: 🔍