SB2017062209 - Denial of service in Cisco ASR 5000 Series Routers
Published: June 22, 2017
Security Bulletin ID
SB2017062209
Severity
Medium
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-2017-3865)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers due to improper processing of Internet Key Exchange (IKE) messages. A remote attacker can send specially crafted IKE messages, cause the ipsecmgr service to reload, terminate all active IPsec VPN tunnels, prevent new tunnels from establishing and cause the system to crash.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.