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I. Basic Information for CVE-2021-34727
Vulnerability Information

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Vulnerability Title
Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. A successful exploit could allow the attacker to cause a buffer overflow and possibly execute arbitrary commands with root-level privileges, or cause the device to reload, which could result in a denial of service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XE SD-WAN Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE SD-WAN Software是美国思科(Cisco)公司的一款应用于Cisco IOS XE 网络操作系统的用于网络管理(软件定义网络)的软件。 Cisco IOS XE SD-WAN Software 存在安全漏洞,该漏洞源于受影响的设备处理流量时边界检查不足造成的。攻击者可利用该漏洞向设备发送精心制作的流量导致缓冲区溢出,并可能执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
CiscoCisco IOS XE SD-WAN Software n/a -
II. Public POCs for CVE-2021-34727
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III. Intelligence Information for CVE-2021-34727
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