Webmin 1.840/1.880 Default Configuration /etc/shadow GET Request path traversal

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Webmin 1.840/1.880. This affects an unknown function of the file /etc/shadow of the component Default Configuration. Executing a manipulation as part of GET Request can lead to path traversal. This vulnerability appears as CVE-2018-8712. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in Webmin 1.840/1.880 (Software Management Software) and classified as critical. This vulnerability affects an unknown part of the file /etc/shadow of the component Default Configuration. The manipulation as part of a GET Request leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. CVE summarizes:

An issue was discovered in Webmin 1.840 and 1.880 when the default Yes setting of "Can view any file as a log file" is enabled. As a result of weak default configuration settings, limited users have full access rights to the underlying Unix system files, allowing the user to read sensitive data from the local system (using Local File Include) such as the '/etc/shadow' file via a "GET /syslog/save_log.cgi?view=1&file=/etc/shadow" request.

The bug was discovered 03/14/2018. The weakness was presented 03/14/2018 (Website). The advisory is shared for download at 7elements.co.uk. This vulnerability was named CVE-2018-8712 since 03/14/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 108563 (Webmin 1.840 / 1.880 Local File Inclusion Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108563). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
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: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108563
Nessus Name: Webmin 1.840 / 1.880 Local File Inclusion Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103874
OpenVAS Name: Webmin 1.880 Information Disclosure Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

03/14/2018 🔍
03/14/2018 +0 days 🔍
03/14/2018 +0 days 🔍
03/14/2018 +0 days 🔍
03/14/2018 +0 days 🔍
03/15/2018 +1 days 🔍
03/22/2018 +7 days 🔍
01/13/2020 +662 days 🔍

Sourcesinfo

Advisory: 7elements.co.uk
Status: Not defined

CVE: CVE-2018-8712 (🔍)
GCVE (CVE): GCVE-0-2018-8712
GCVE (VulDB): GCVE-100-114628

Entryinfo

Created: 03/15/2018 09:29
Updated: 01/13/2020 21:10
Changes: 03/15/2018 09:29 (69), 01/13/2020 21:10 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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