Meinberg Lantime up to 6.24 Web Configuration Utility cgi-bin/mainv2 ntpclientcounterlogfile File information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in Meinberg Lantime up to 6.24. Affected by this issue is some unknown functionality of the file cgi-bin/mainv2 of the component Web Configuration Utility. Such manipulation of the argument ntpclientcounterlogfile as part of Parameter leads to information disclosure (File). This vulnerability is traded as CVE-2017-16786. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Meinberg Lantime up to 6.24 and classified as problematic. Affected by this issue is an unknown functionality of the file cgi-bin/mainv2 of the component Web Configuration Utility. The manipulation of the argument ntpclientcounterlogfile as part of a Parameter leads to a information disclosure vulnerability (File). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is integrity, and availability. CVE summarizes:

The Web Configuration Utility in Meinberg LANTIME devices with firmware before 6.24.004 allows remote authenticated users with certain privileges to read arbitrary files via (1) the ntpclientcounterlogfile parameter to cgi-bin/mainv2 or (2) vectors involving curl support of the "file" schema in the firmware update functionality.

The bug was discovered 12/14/2017. The weakness was shared 12/19/2017 as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2017-16786 since 11/10/2017. The attack may be launched remotely. The successful exploitation needs a simple authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

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

Upgrading to version 6.24.004 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Meinberg

Name

• Lantime

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13
• 6.14
• 6.15
• 6.16
• 6.17
• 6.18
• 6.19
• 6.20
• 6.21
• 6.22
• 6.23
• 6.24

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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CVSSv3info

CVSSv2info

Exploitinginfo

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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