CVE-2016-6455

HIGH

Cisco ASR 5500 Series with DPC2 StarOS 18.x-21.x - Unauthenticated Denial of Service via Slowpath

Title source: llm
STIX 2.1

Description

A vulnerability in the Slowpath of StarOS for Cisco ASR 5500 Series routers with Data Processing Card 2 (DPC2) could allow an unauthenticated, remote attacker to cause a subset of the subscriber sessions to be disconnected, resulting in a partial denial of service (DoS) condition. This vulnerability affects Cisco ASR 5500 devices with Data Processing Card 2 (DPC2) running StarOS 18.0 or later. More Information: CSCvb12081. Known Affected Releases: 18.7.4 19.5.0 20.0.2.64048 20.2.3 21.0.0. Known Fixed Releases: 18.7.4 18.7.4.65030 18.8.M0.65044 19.5.0 19.5.0.65092 19.5.M0.65023 19.5.M0.65050 20.2.3 20.2.3.64982 20.2.3.65017 20.2.a4.65307 20.3.M0.64984 20.3.M0.65029 20.3.M0.65037 20.3.M0.65071 20.3.T0.64985 20.3.T0.65031 20.3.T0.65043 20.3.T0.65067 21.0.0 21.0.0.65256 21.0.M0.64922 21.0.M0.64983 21.0.M0.65140 21.0.V0.65150 21.1.A0.64932 21.1.A0.64987 21.1.A0.65145 21.1.PP0.65270 21.1.R0.65130 21.1.R0.65135 21.1.R0.65154 21.1.VC0.65203 21.2.A0.65147.

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037186
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94071

Scores

CVSS v3 7.5
EPSS 0.0175
EPSS Percentile 75.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-399
Status published
Products (22)
cisco/asr_5000_software 18.0.0
cisco/asr_5000_software 18.0.0.57828
cisco/asr_5000_software 18.0.0.59167
cisco/asr_5000_software 18.0.0.59211
cisco/asr_5000_software 18.0.l0.59219
cisco/asr_5000_software 18.1.0
cisco/asr_5000_software 18.1.0.59776
cisco/asr_5000_software 18.1.0.59780
cisco/asr_5000_software 18.1_base
cisco/asr_5000_software 18.3.0
... and 12 more
Published Nov 03, 2016
Tracked Since Feb 18, 2026