Subscription Manager up to 1.17.7 on Candlepin /var/lib/rhsm/ access control

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Subscription Manager up to 1.17.7 on Candlepin and classified as problematic. Affected is an unknown function in the library /var/lib/rhsm/. Performing a manipulation results in access control. This vulnerability is cataloged as CVE-2016-4455. The attack must be initiated from a local position. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Subscription Manager up to 1.17.7 on Candlepin. It has been classified as problematic. This affects an unknown part in the library /var/lib/rhsm/. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality. The summary by CVE is:

The Subscription Manager package (aka subscription-manager) before 1.17.7-1 for Candlepin uses weak permissions (755) for subscription-manager cache directories, which allows local users to obtain sensitive information by reading files in the directories.

The bug was discovered 05/27/2016. The weakness was shared 04/14/2017 by Cedric Buissart (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2016-4455 since 05/02/2016. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. 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 182 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95338 (CentOS 7 : python-rhsm / subscription-manager (CESA-2016:2592)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236305 (Red Hat Update for subscription-manager Security (RHSA-2017:0698)).

Upgrading to version 1.17.7-1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95338) and SecurityFocus (BID 93926†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95338
Nessus Name: CentOS 7 : python-rhsm / subscription-manager (CESA-2016:2592)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for subscription-manager RHSA-2017:0698-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Subscription Manager 1.17.7-1
Patch: github.com

Timelineinfo

05/02/2016 🔍
05/27/2016 +25 days 🔍
10/26/2016 +152 days 🔍
11/25/2016 +30 days 🔍
11/28/2016 +3 days 🔍
04/14/2017 +137 days 🔍
04/14/2017 +0 days 🔍
04/15/2017 +1 days 🔍
10/01/2024 +2726 days 🔍

Sourcesinfo

Advisory: RHSA-2016:2592
Researcher: Cedric Buissart
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4455 (🔍)
GCVE (CVE): GCVE-0-2016-4455
GCVE (VulDB): GCVE-100-99879
SecurityFocus: 93926 - Candlepin 'subscription-manager' CVE-2016-4455 Insecure File Permissions Vulnerability
OSVDB: - CVE-2016-4455 - Subscription Manager for Candlepin - Information Disclosure Issue
SecurityTracker: 1038083

Entryinfo

Created: 04/15/2017 15:24
Updated: 10/01/2024 17:10
Changes: 04/15/2017 15:24 (75), 08/31/2020 11:35 (3), 11/29/2022 13:30 (6), 10/01/2024 17:10 (17)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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