Vulnerabilities > CVE-2016-3657 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Paloaltonetworks Pan-Os
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Buffer overflow in the GlobalProtect Portal in Palo Alto Networks PAN-OS before 5.0.18, 6.0.x before 6.0.13, 6.1.x before 6.1.10, and 7.0.x before 7.0.5 allows remote attackers to cause a denial of service (device crash) or possibly execute arbitrary code via an SSL VPN request.
Vulnerable Configurations
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.
Nessus
| NASL family | General |
| NASL id | PALO_ALTO_PAN-SA-2016-0005_REMOTE.NASL |
| description | The Palo Alto Networks PAN-OS running on the remote host is affected by a remote code execution vulnerability in the GlobalProtect web portal due to improper validation of user-supplied input when handling SSL VPN requests. An unauthenticated, remote attacker can exploit this, via a crafted request, to cause an overflow condition, resulting in a denial of service or the execution of arbitrary code. Note that the remote PAN-OS is reportedly affected by other vulnerabilities as well; however, Nessus has not tested for these. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 90246 |
| published | 2016-03-28 |
| reporter | This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/90246 |
| title | Palo Alto Networks PAN-OS GlobalProtect Web Portal RCE (PAN-SA-2016-0005) |
| code | |