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CVE-2017-3857

Quick assessment

Affected
n/a Cisco IOS and IOS XE
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和IOS XE Software都是美国思科（Cisco）公司为其网络设备开发的操作系统。 Cisco IOS 12.0至12.4版本和15.0至15.6版本和Cisco IOS XE 3.1至3.18版本中的Layer 2 Tunneling Protocol(L2TP)解析功能存在安全漏洞，该漏洞源于程序没有充分过滤L2TP数据包。远程攻击者可通过发送大量的数据包利用该漏洞造成拒绝服务（设备重载）。

AI Predicted 7.5 Difficulty: Easy EPSS 2.59% · P85

Possible ATT&CK Techniques 1 AI

T1598 · Phishing for Information
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I. Basic Information for CVE-2017-3857

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Layer 2 Tunneling Protocol (L2TP) parsing function of Cisco IOS (12.0 through 12.4 and 15.0 through 15.6) and Cisco IOS XE (3.1 through 3.18) could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient validation of L2TP packets. An attacker could exploit this vulnerability by sending a crafted L2TP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or Cisco IOS XE Software if the L2TP feature is enabled for the device and the device is configured as an L2TP Version 2 (L2TPv2) or L2TP Version 3 (L2TPv3) endpoint. By default, the L2TP feature is not enabled. Cisco Bug IDs: CSCuy82078.
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和IOS XE Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和IOS XE Software都是美国思科（Cisco）公司为其网络设备开发的操作系统。 Cisco IOS 12.0至12.4版本和15.0至15.6版本和Cisco IOS XE 3.1至3.18版本中的Layer 2 Tunneling Protocol(L2TP)解析功能存在安全漏洞，该漏洞源于程序没有充分过滤L2TP数据包。远程攻击者可通过发送大量的数据包利用该漏洞造成拒绝服务（设备重载）。
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 and IOS XE Cisco IOS and IOS XE -

II. Public POCs for CVE-2017-3857

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III. Intelligence Information for CVE-2017-3857

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Vendor Advisories for CVE-2017-3857 (3)

Same Patch Batch · n/a · 2017-03-22 · 29 CVEs total

CVE-2017-7226 GNU Binutils 缓冲区错误漏洞
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CVE-2017-5874 D-Link DIR-600M Rev. Cx 跨站请求伪造漏洞
CVE-2017-6971 AlienVault USM、OSSIM和NfSen 安全漏洞
CVE-2017-6970 AlienVault USM、OSSIM和NfSen 安全漏洞
CVE-2014-9840 ImageMagick 安全漏洞
CVE-2014-9839 ImageMagick 安全漏洞
CVE-2014-9838 ImageMagick 安全漏洞
CVE-2014-9836 ImageMagick 安全漏洞
CVE-2014-9835 ImageMagick 缓冲区错误漏洞
CVE-2014-9834 ImageMagick 缓冲区错误漏洞
CVE-2014-9833 ImageMagick 缓冲区错误漏洞
CVE-2014-9832 ImageMagick 缓冲区错误漏洞
CVE-2017-7227 GNU Binutils 缓冲区错误漏洞
CVE-2017-6972 AlienVault USM、OSSIM和NfSen 安全漏洞
CVE-2017-7225 GNU Binutils 安全漏洞
CVE-2017-7224 GNU Binutils 安全漏洞
CVE-2017-7223 GNU Binutils 安全漏洞
CVE-2017-5673 Joomla! Kunena组件跨站脚本漏洞
CVE-2017-7231 pngdefry 缓冲区错误漏洞

Showing top 20 of 29 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2017-3857

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