安全研究

安全漏洞
Cisco Adaptive Security Appliance和Firepower Threat Defense ALG绕过漏洞(CVE-2021-3479

发布日期:2021-10-27
更新日期:2021-10-28

受影响系统:
Cisco Adaptive Security Appliance
Cisco Firepower Threat Defense
描述:
CVE(CAN) ID: CVE-2021-34790

Cisco Adaptive Security Appliances Software(ASA Software)是美国思科(Cisco)公司的一套防火墙和网络安全平台。该平台提供了对数据和网络资源的高度安全的访问等功能。
Cisco Adaptive Security Appliance和Firepower Threat Defense的NAT功能的会话发起协议(SIP)存在ALG绕过漏洞。该漏洞源于程序未对SIP ALG的流量进行正确验证。攻击者可利用该漏洞打开与远程主机的未经授权的连接,并利用该主机采取行动。

<*链接:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-natalg-bypass-cpKGqkn
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建议:
厂商补丁:

Cisco
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Cisco已经为此发布了一个安全公告(cisco-sa-natalg-bypass-cpKGqkng)以及相应补丁:
cisco-sa-natalg-bypass-cpKGqkng:Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Application Level Gateway Bypass Vulnerabilities
链接:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-natalg-bypass-cpKGqkng

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