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Cisco ASR 1000 Series Aggregation Services Routers Data-Plane Processing Denial of Service Vulnerability

Cisco-SA-20150831-CVE-2015-6274 · Medium · Published · Updated

A vulnerability in the Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to the processing of excessive number of IPv4 packets that require fragmentation and reassembly. An attacker could exploit ths vulnerability by sending an excessive number of fragmented packets, causing high Cisco QuantumFlow Processor (QFP) CPU utilization in the Embedded Services Processor (ESP). Cisco has confirmed the vulnerability; however, software updates are not available. To exploit this vulnerability, the attacker must send an excessive number of fragmented packets to the targeted system, making exploitation more difficult in environments that restrict access from untrusted sources Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

Cisco advisory ·CSAF JSON

Workarounds

Administrators are advised to allow only trusted users to have network access.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.

CVEsCVE-2015-6274
Cisco Bug IDsNA
CVSS ScoreBase 5.0
Base 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
Product Names From Source
Cisco ASR 1000 Series Aggregation Services Routers

CSAF Product Statuses

Product Status Source CVE Rows
Cisco ASR 1000 Series Aggregation Services Routers known_affected cisco_csaf CVE-2015-6274 1

Related Products

Product CVE Evidence
Cisco ASR 1000 Series Aggregation Services Routers CVE-2015-6274 Cisco OpenVuln · family-level