VDB-109781 · CVE-2017-16920 · GCVE-0-2017-16920

FineCMS 5.2.0 Membr API v5/config/system.php SYS_KEY key management

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.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in FineCMS 5.2.0. It has been rated as critical. Affected by this issue is some unknown functionality of the file v5/config/system.php of the component Membr API. The manipulation of the argument SYS_KEY as part of PHP File leads to key management. This vulnerability is documented as CVE-2017-16920. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in FineCMS 5.2.0. It has been rated as critical. This issue affects an unknown function of the file v5/config/system.php of the component Membr API. The manipulation of the argument SYS_KEY as part of a PHP File leads to a key management vulnerability. Using CWE to declare the problem leads to CWE-320. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

v5/config/system.php in dayrui FineCms 5.2.0 has a default SYS_KEY value and does not require key regeneration for each installation, which allows remote attackers to upload arbitrary .php files via a member api swfupload action to index.php.

The bug was discovered 11/21/2017. The weakness was released 11/21/2017 (Website). The advisory is shared at gitee.com. The identification of this vulnerability is CVE-2017-16920 since 11/21/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

By approaching the search of inurl:v5/config/system.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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

FineCMS

Version

5.2.0

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Key management
CWE: CWE-320
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: 🔍

Patch: gitee.com

Timelineinfo

11/21/2017 🔍
11/21/2017 +0 days 🔍
11/21/2017 +0 days 🔍
11/21/2017 +0 days 🔍
11/22/2017 +1 days 🔍
01/11/2023 +1876 days 🔍

Sourcesinfo

Advisory: ff4b7ad3c3fbd3245b3bb7bc774d20c9705d9882
Status: Not defined

CVE: CVE-2017-16920 (🔍)
GCVE (CVE): GCVE-0-2017-16920
GCVE (VulDB): GCVE-100-109781

Entryinfo

Created: 11/22/2017 07:56
Updated: 01/11/2023 08:56
Changes: 11/22/2017 07:56 (57), 12/09/2019 11:14 (1), 01/11/2023 08:56 (4)
Complete: 🔍
Cache ID: 216::103