Vulnerabilities > CVE-2007-4776 - Buffer Errors vulnerability in Microsoft Visual Basic 6.0
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
Buffer overflow in Microsoft Visual Basic 6.0 and Enterprise Edition 6.0 SP6 allows user-assisted remote attackers to execute arbitrary code via a Visual Basic project (vbp) file containing a long Reference line, related to VBP_Open and OLE. NOTE: there are limited usage scenarios under which this would be a vulnerability.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 |
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 Microsoft Visual Basic VBP Buffer Overflow. CVE-2007-4776. Local exploit for windows platform id EDB-ID:16680 last seen 2016-02-02 modified 2010-09-25 published 2010-09-25 reporter metasploit source https://www.exploit-db.com/download/16680/ title Microsoft Visual Basic VBP Buffer Overflow description Microsoft Visual Basic 6.0 VBP_Open OLE Local CodeExec Exploit. CVE-2007-4776. Local exploit for windows platform file exploits/windows/local/4361.pl id EDB-ID:4361 last seen 2016-01-31 modified 2007-09-04 platform windows port published 2007-09-04 reporter Koshi source https://www.exploit-db.com/download/4361/ title Microsoft Visual Basic 6.0 VBP_Open OLE Local CodeExec Exploit type local id EDB-ID:4431
Metasploit
| description | This module exploits a stack overflow in Microsoft Visual Basic 6.0. When a specially crafted vbp file containing a long reference line, an attacker may be able to execute arbitrary code. |
| id | MSF:EXPLOIT/WINDOWS/FILEFORMAT/MS_VISUAL_BASIC_VBP |
| last seen | 2020-01-16 |
| modified | 2020-01-15 |
| published | 2009-10-19 |
| references | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4776 |
| reporter | Rapid7 |
| source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/fileformat/ms_visual_basic_vbp.rb |
| title | Microsoft Visual Basic VBP Buffer Overflow |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/82998/ms_visual_basic_vbp.rb.txt |
| id | PACKETSTORM:82998 |
| last seen | 2016-12-05 |
| published | 2009-11-26 |
| reporter | MC |
| source | https://packetstormsecurity.com/files/82998/Microsoft-Visual-Basic-VBP-Buffer-Overflow.html |
| title | Microsoft Visual Basic VBP Buffer Overflow |
Saint
| bid | 25629 |
| description | Microsoft Visual Basic VBP file buffer overflow |
| id | misc_vb6vbpbo |
| osvdb | 36936 |
| title | visual_basic_vbp |
| type | client |