Denial of service in Cisco ASR 5000 Series - CVE-2016-6455
Published: November 3, 2016 / Updated: April 5, 2018
Vulnerability identifier: #VU1135
CSH Severity: Low
CVSS v4: 8.7 [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]
CVE-ID: CVE-2016-6455
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
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.
Affected software
Cisco ASR 5000 Series
How to mitigate CVE-2016-6455
Update fixed versions from the vendor's website.