CVE-2019-1686— Cisco ASR 9000 访问控制错误漏洞

Cisco ASR 9000 Series Aggregation Services Routers ACL Bypass Vulnerability

A vulnerability in the TCP flags inspection feature for access control lists (ACLs) on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass protection offered by a configured ACL on an affected device. The vulnerability is due to incorrect processing of the ACL applied to an interface of an affected device when Cisco Express Forwarding load balancing using the 3-tuple hash algorithm is enabled. An attacker could exploit this vulnerability by sending traffic through an affected device that should otherwise be denied by the configured ACL. An exploit could allow the attacker to bypass protection offered by a configured ACL on the affected device. There are workarounds that address this vulnerability. Affected Cisco IOS XR versions are: Cisco IOS XR Software Release 5.1.1 and later till first fixed. First Fixed Releases: 6.5.2 and later, 6.6.1 and later.

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访问控制不恰当

Cisco ASR 9000 访问控制错误漏洞

Cisco ASR 9000是美国思科（Cisco）公司的一款9000系列聚合服务路由器。 Cisco ASR 9000中的TCP标志检查功能（用于ACLs）存在存在访问控制错误漏洞，该漏洞源于网络系统或产品未正确限制来自未授权角色的资源访问。

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