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CVE-2017-6742

Quick assessment

Affected
Cisco Cisco IOS XE Software
Exploitation
Confirmed exploitation in the wild; remediate immediately
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都是美国思科（Cisco）公司为其网络设备开发的操作系统。Simple Network Management Protocol（SNMP）subsystem是其中的一个用于网络设备管理信息交换的简单网络管理子系统。 Cisco IOS 12.0版本至12.4版本、15.0版本至15.6版本和IOS XE 2.2版本至3.17版本中的SNMP子系统存在缓冲区溢出漏洞。远程攻击者可通过向受影响的系统发送特制的SNMP数据包利用该漏洞在受影响的系统上执行任意代码。以下版本受到影响

AI Predicted 7.8 Difficulty: Moderate KEV EPSS 21.42% · P98
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I. Basic Information for CVE-2017-6742

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.  The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system. Only traffic directed to the affected system can be used to exploit this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和IOS XE都是美国思科（Cisco）公司为其网络设备开发的操作系统。Simple Network Management Protocol（SNMP）subsystem是其中的一个用于网络设备管理信息交换的简单网络管理子系统。 Cisco IOS 12.0版本至12.4版本、15.0版本至15.6版本和IOS XE 2.2版本至3.17版本中的SNMP子系统存在缓冲区溢出漏洞。远程攻击者可通过向受影响的系统发送特制的SNMP数据包利用该漏洞在受影响的系统上执行任意代码。以下版本受到影响
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XE Software 3.7.0S -
IntelliShield Universal Product N/A -

II. Public POCs for CVE-2017-6742

# POC Description Source Link Shenlong Link
1 Comprehensive 100% Unrestricted Technical Analysis of JAGUAR_TOOTH Malware (APT28). High-precision reconstruction of Cisco IOS SNMP exploitation, ROP chaining, and memory-resident espionage tactics by SASTRA_ADI_WIGUNA. https://github.com/sastraadiwiguna-purpleeliteteaming/Cisco-IOS-Exploitation-JAGUAR_TOOTH-CVE-2017-6742-Reconstruction POC Details
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III. Intelligence Information for CVE-2017-6742

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Vendor Advisories for CVE-2017-6742 (4)

Same Patch Batch · Cisco · 2017-07-17 · 8 CVEs total

CVE-2017-6736 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6737 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6738 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6740 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6741 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6743 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞
CVE-2017-6744 Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco

V. Comments for CVE-2017-6742

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