cisco ios_xe 对异常条件的处理不恰当

CVE编号

CVE-2021-1495

利用情况

暂无

补丁情况

N/A

披露时间

2021-04-30

漏洞描述

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	cisco	ios_xe	*	From (including) 16.12:	Up to (excluding) 16.12.5:
	运行在以下环境
	应用	cisco	ios_xe	*	From (including) 17.1:	Up to (excluding) 17.3.3:
	运行在以下环境
	应用	cisco	ios_xe	*	From (including) 17.4:	Up to (excluding) 17.4.1:
	运行在以下环境
	应用	snort	snort	*		Up to (excluding) 2.9.17.1:

CVSS3评分 5.3

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 无
• 影响范围 未更改
• 用户交互 无
• 可用性 无
• 保密性 无
• 完整性 低

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CWE-ID 漏洞类型 CWE-755 对异常条件的处理不恰当