CMS Made Simple 2.2.7 admin/checksum.php path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability classified as critical has been found in CMS Made Simple 2.2.7 (Content Management System). Affected is an unknown code block of the file admin/checksum.php?__c. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

In CMS Made Simple 2.2.7, a Directory Traversal issue makes it possible to determine the existence of files and directories outside the web-site installation directory, and determine whether a file has contents matching a specified checksum. The attack uses an admin/checksum.php?__c= request.

The bug was discovered 04/10/2018. The weakness was disclosed 04/23/2018 (Website). The advisory is available at gist.github.com. This vulnerability is traded as CVE-2018-9921 since 04/10/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k.

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

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/10/2018 🔍
04/10/2018 +0 days 🔍
04/23/2018 +12 days 🔍
04/23/2018 +0 days 🔍
04/24/2018 +1 days 🔍
01/30/2020 +646 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2018-9921 (🔍)

Entryinfo

Created: 04/24/2018 09:03
Updated: 01/30/2020 17:00
Changes: 04/24/2018 09:03 (56), 01/30/2020 17:00 (1)
Complete: 🔍

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