Vulnerabilities > CVE-2013-5959 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Bluecoat Proxysg and Proxysgos
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
Blue Coat ProxySG before 6.2.14.1, 6.3.x, 6.4.x, and 6.5 before 6.5.2 allows remote attackers to cause a denial of service (memory consumption and dropped connections) via a recursive href in an HTML page, which triggers a large number of HTTP RW pipeline pre-fetch requests.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 9 | |
| Application | 1 |
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 | Firewalls |
| NASL id | BLUECOAT_PROXY_SG_6_5_2.NASL |
| description | According to its self-reported version number, the Security Gateway OS (SGOS) version installed on the remote Blue Coat ProxySG device is potentially affected by a denial of service vulnerability caused by a large amount of HTTP RW pipeline pre-fetch requests. Note that only devices with forward or reverse mode for HTTP traffic enabled are affected. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 70302 |
| published | 2013-10-04 |
| reporter | This script is Copyright (C) 2013-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/70302 |
| title | Blue Coat ProxySG Recursive HTTP Pipeline Pre-Fetch Remote DoS |
| code | |