Vulnerabilities > CVE-2017-6658 - Out-of-bounds Read vulnerability in Cisco Sourcefire Snort 3.0
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
Cisco Sourcefire Snort 3.0 before build 233 has a Buffer Overread related to use of a decoder array. The size was off by one making it possible to read past the end of the array with an ether type of 0xFFFF. Increasing the array size solves this problem.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170515-snort
- http://blog.snort.org/2017/05/snort-vulnerabilities-found.html
- http://blog.snort.org/2017/05/snort-vulnerabilities-found.html
- http://www.securitytracker.com/id/1038483
- http://www.securitytracker.com/id/1038483