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A vulnerability in Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper management of memory resources, referred to as a double free. An attacker could exploit this vulnerability by sending crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. To exploit this vulnerability via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability via SNMP Version 3, the attacker must know the user credentials for the affected system. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, have been configured to be queried over SNMP, and have Network Address Translation (NAT) enabled. Cisco Bug IDs: CSCve75818.

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双重释放

Cisco IOS XE Software Simple Network Management Protocol子系统安全漏洞

Cisco IOS XE Software是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。Simple Network Management Protocol（SNMP）subsystem是其中的一个用于网络设备管理信息交换的简单网络管理子系统。 Cisco IOS XE Software中的SNMP子系统存在拒绝服务漏洞，该漏洞源于程序没有正确的管理内存资源。远程攻击者可通过发送特制的SNMP数据包利用该漏洞造成拒绝服务。

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