VDB-114750 · CVE-2018-8756 · GCVE-0-2018-8756

YzmCMS 3.7.1 global.func.php HTTP POST Request command injection

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.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in YzmCMS 3.7.1. It has been declared as critical. This impacts an unknown function of the file yzmphp/core/function/global.func.php. The manipulation as part of HTTP POST Request results in command injection. This vulnerability is known as CVE-2018-8756. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in YzmCMS 3.7.1. Affected is some unknown processing of the file yzmphp/core/function/global.func.php. The manipulation as part of a HTTP POST Request leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Eval injection in yzmphp/core/function/global.func.php in YzmCMS v3.7.1 allows remote attackers to achieve arbitrary code execution via PHP code in the POST data of an index.php?m=member&c=member_content&a=init request.

The bug was discovered 03/17/2018. The weakness was published 03/18/2018 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2018-8756 since 03/17/2018. It is possible to launch the attack remotely. Required for exploitation is a authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:yzmphp/core/function/global.func.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

YzmCMS

Version

3.7.1

License

commercial

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.7
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/17/2018 🔍
03/17/2018 +0 days 🔍
03/18/2018 +1 days 🔍
03/18/2018 +0 days 🔍
03/19/2018 +1 days 🔍
01/14/2020 +666 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-8756 (🔍)
GCVE (CVE): GCVE-0-2018-8756
GCVE (VulDB): GCVE-100-114750

Entryinfo

Created: 03/19/2018 07:53
Updated: 01/14/2020 16:35
Changes: 03/19/2018 07:53 (56), 01/14/2020 16:35 (1)
Complete: 🔍
Cache ID: 216::103