Vulnerabilities > CVE-2016-3962 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Meinberg products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
LOW Availability impact
LOW Summary
Stack-based buffer overflow in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, and LCES devices with firmware before 6.20.004 allows remote attackers to obtain sensitive information, modify data, or cause a denial of service via a crafted parameter in a POST request.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 | |
| Hardware | 11 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Exploit-Db
| description | Meinberg NTP Time Server ELX800/GPS M4x V5.30p - Remote Command Execution and Escalate Privileges. CVE-2016-3962,CVE-2016-3989. Remote exploit for Hardware p... |
| file | exploits/hardware/remote/40120.py |
| id | EDB-ID:40120 |
| last seen | 2016-07-18 |
| modified | 2016-07-17 |
| platform | hardware |
| port | |
| published | 2016-07-17 |
| reporter | b0yd |
| source | https://www.exploit-db.com/download/40120/ |
| title | Meinberg NTP Time Server ELX800/GPS M4x V5.30p - Remote Command Execution and Escalate Privileges |
| type | remote |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/137947/meinbergntp-exec.txt |
| id | PACKETSTORM:137947 |
| last seen | 2016-12-05 |
| published | 2016-07-18 |
| reporter | b0yd |
| source | https://packetstormsecurity.com/files/137947/Meinberg-NTP-Time-Server-ELX800-GPS-M4x-5.30p-Command-Execution.html |
| title | Meinberg NTP Time Server ELX800/GPS M4x 5.30p Command Execution |