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CVE-2017-3876

Quick assessment

Affected
n/a Cisco IOS XR
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XR Software是美国思科（Cisco）公司的IOS软件系列（包括IOS T、IOS S和IOS XR）中的一套完全模块化、分布式的网络操作系统。 Cisco IOS XR Software中的Event Management Service daemon (emsd)存在拒绝服务漏洞，该漏洞源于程序没有正确的处理gRPC请求。远程攻击者可通过反复发送未授权的gRPC请求利用该漏洞造成拒绝服务（设备崩溃）。

AI Predicted 7.5 Difficulty: Easy EPSS 2.48% · P84

Possible ATT&CK Techniques 1 AI

T1499.001 · OS Exhaustion Flood
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I. Basic Information for CVE-2017-3876

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Event Management Service daemon (emsd) of Cisco IOS XR routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of gRPC requests. An attacker could exploit this vulnerability by repeatedly sending unauthenticated gRPC requests to the affected device. A successful exploit could allow the attacker to crash the device in such a manner that manual intervention is required to recover. This vulnerability affects all Cisco IOS XR platforms that are running release 6.1.1 of Cisco IOS XR Software when the gRPC service is enabled on the device. The gRPC service is not enabled by default. Cisco Bug IDs: CSCvb14441.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
资源管理错误
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR Software是美国思科（Cisco）公司的IOS软件系列（包括IOS T、IOS S和IOS XR）中的一套完全模块化、分布式的网络操作系统。 Cisco IOS XR Software中的Event Management Service daemon (emsd)存在拒绝服务漏洞，该漏洞源于程序没有正确的处理gRPC请求。远程攻击者可通过反复发送未授权的gRPC请求利用该漏洞造成拒绝服务（设备崩溃）。
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

Vendor Product Affected Versions CPE Subscribe
- Cisco IOS XR Cisco IOS XR -

II. Public POCs for CVE-2017-3876

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III. Intelligence Information for CVE-2017-3876

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Vendor Advisories for CVE-2017-3876 (3)

Same Patch Batch · n/a · 2017-05-16 · 12 CVEs total

CVE-2017-7952 Infor EAM SQL注入漏洞
CVE-2017-7953 Infor EAM 跨站脚本漏洞
CVE-2017-8382 Admidio 跨站请求伪造漏洞
CVE-2016-10372 Eir D1000 安全漏洞
CVE-2017-3825 多款Cisco产品TelePresence Collaboration Endpoint Software 安全漏洞
CVE-2017-3873 Cisco Aironet 1800、2800和3800 Series Access Points Plug-and-Play子系统安全漏洞
CVE-2017-3882 Cisco CVR100W Wireless-N VPN Router 缓冲区错误漏洞
CVE-2017-6079 Edgewater Networks Edgemarc 安全漏洞
CVE-2017-6651 Cisco WebEx Meetings Server 信息泄露漏洞
CVE-2017-6657 Cisco Sourcefire Snort 安全漏洞
CVE-2017-6658 Cisco Sourcefire Snort 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XR
Same vendor: n/a
Same weakness: CWE-399

V. Comments for CVE-2017-3876

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