SB2016110306 - Denial of service in Cisco ASR 5000 Series
Published: November 3, 2016 Updated: April 5, 2018
Security Bulletin ID
SB2016110306
CSH 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 vulnerability.
1) Denial of service (CVE-ID: CVE-2016-6455)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness is due to insufficient input validation. By sending a specially crafted IPv4 or IPv6 fragmented packets, a remote attacker is able to trigger a flaw in the Slowpath of StarOS for ASR 5500 Series devices with Data Processing Card 2 (DPC2) and reload of the sessmgr service.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.