A vulnerability classified as problematic was found in Meinberg Lantime up to 6.24. Affected by this vulnerability is an unknown function of the component Web Configuration Utility. The manipulation with an unknown input 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, and integrity. The summary by CVE is:

Directory traversal vulnerability in the "Upload Groupkey" functionality in the Web Configuration Utility in Meinberg LANTIME devices with firmware before 6.24.004 allows remote authenticated users with Admin-User access to write to arbitrary files and consequently gain root privileges by uploading a file, as demonstrated by storing a file in the cron.d directory.

The bug was discovered 12/11/2017. The weakness was shared 12/15/2017 as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. This vulnerability is known as CVE-2017-16788 since 11/10/2017. The exploitation appears to be easy. The attack can be launched remotely. The successful exploitation requires a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 6.24.004 eliminates this vulnerability.

The entry 110718 is related to this item.

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

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CPE 2.2info

• 🔍
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