SB2017062303 - Denial of service in Cisco Wide Area Application Services
Published: June 23, 2017
Security Bulletin ID
SB2017062303
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Denial of service (CVE-ID: CVE-2017-6721)
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.The weakness exists in the Cisco Wide Area Application Services (WAAS) due to incomplete input validation of TCP packets when a packet chain is fragmented. A remote attacker can send specially crafted set of TCP fragments, trigger the WAAS to drop traffic ad cause the WAASNET process to restart.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.