VDB-117228 · CVE-2018-1102 · Bug 1562246

OpenShift Enterprise 3.x TAR File tar/tar.go ExtractTarStreamFromTarReader 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 OpenShift Enterprise 3.x. It has been declared as critical. Affected by this issue is the function ExtractTarStreamFromTarReader of the file tar/tar.go of the component TAR File Handler. The manipulation results in access control. This vulnerability was named CVE-2018-1102. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in OpenShift Enterprise 3.x (Virtualization Software). Affected is the function ExtractTarStreamFromTarReader of the file tar/tar.go of the component TAR File Handler. 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, integrity, and availability. CVE summarizes:

A flaw was found in source-to-image function as shipped with Openshift Enterprise 3.x. An improper path validation of tar files in ExtractTarStreamFromTarReader in tar/tar.go leads to privilege escalation.

The bug was discovered 03/29/2018. The weakness was presented 04/30/2018 as Bug 1562246 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2018-1102 since 12/04/2017. It is possible to launch the attack remotely. Required for exploitation is a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119393 (RHEL 7 : OpenShift Container Platform 3.8 (RHSA-2018:1229)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l.

Upgrading 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 vulnerability database at Tenable (119393). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Virtualization Software

Name

OpenShift Enterprise

Version

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

Nessus ID: 119393
Nessus Name: RHEL 7 : OpenShift Container Platform 3.8 (RHSA-2018:1229)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/04/2017 🔍
03/29/2018 +115 days 🔍
04/28/2018 +30 days 🔍
04/30/2018 +1 days 🔍
04/30/2018 +0 days 🔍
05/01/2018 +1 days 🔍
12/04/2018 +217 days 🔍
02/01/2020 +424 days 🔍

Sourcesinfo

Advisory: Bug 1562246
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-1102 (🔍)
GCVE (CVE): GCVE-0-2018-1102
GCVE (VulDB): GCVE-100-117228

Entryinfo

Created: 05/01/2018 12:07
Updated: 02/01/2020 14:54
Changes: 05/01/2018 12:07 (63), 02/01/2020 14:54 (8)
Complete: 🔍
Cache ID: 216::103