CVE-2020-3132— Cisco Email Security Appliance Shortened URL Denial of Service Vulnerability

Cisco Email Security Appliance Shortened URL Denial of Service Vulnerability

A vulnerability in the email message scanning feature of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause a temporary denial of service (DoS) condition on an affected device. The vulnerability is due to inadequate parsing mechanisms for specific email body components. An attacker could exploit this vulnerability by sending a malicious email containing a high number of shortened URLs through an affected device. A successful exploit could allow the attacker to consume processing resources, causing a DoS condition on an affected device. To successfully exploit this vulnerability, certain conditions beyond the control of the attacker must occur.

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未加控制的资源消耗(资源穷尽)

Cisco Email Security Appliance和Cloud Email Security 资源管理错误漏洞

Cisco Email Security Appliance（ESA）是美国思科（Cisco）公司的一个电子邮件安全设备。 Cisco ESA和Cisco Cloud Email Security 12.5.1-037之前版本和13.0.0-375之前版本中的邮件消息扫描功能存在资源管理错误漏洞，该漏洞源于源于不正确的解析机制。攻击者可通过从受影响的设备发送大量恶意电子邮件来利用该漏洞造成拒绝服务。

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