Known Exploited Vulnerabilities CVE-2017-6742 Mappings

The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.2 through 3.17 contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities. The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP: Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable. Cisco Bug IDs: CSCve54313.

Mappings

Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name Notes
CVE-2017-6742 Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability secondary_impact T1542.005 TFTP Boot
Comments
CVE-2017-6742 is a Simple Network Management Protocol (SNMP) vulnerability in Cisco products related to a buffer overflow condition in the SNMP subsystem. Reported by the NCSC, threat actors exploited CVE-2017-6742 to perform reconnaissance, enumerate router interfaces and deploy custom malware known as "Jaguar Tooth", as detailed in the NCSC’s Jaguar Tooth malware analysis report. This malware obtains further device information which is then exfiltrated over trivial file transfer protocol (TFTP) and enables unauthenticated access via a backdoor.
References
CVE-2017-6742 Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability primary_impact T1059 Command and Scripting Interpreter
Comments
CVE-2017-6742 is a Simple Network Management Protocol (SNMP) vulnerability in Cisco products related to a buffer overflow condition in the SNMP subsystem. Reported by the NCSC, threat actors exploited CVE-2017-6742 to perform reconnaissance, enumerate router interfaces and deploy custom malware known as "Jaguar Tooth", as detailed in the NCSC’s Jaguar Tooth malware analysis report. This malware obtains further device information which is then exfiltrated over trivial file transfer protocol (TFTP) and enables unauthenticated access via a backdoor.
References
CVE-2017-6742 Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability exploitation_technique T1574 Hijack Execution Flow
Comments
CVE-2017-6742 is a Simple Network Management Protocol (SNMP) vulnerability in Cisco products related to a buffer overflow condition in the SNMP subsystem. Reported by the NCSC, threat actors exploited CVE-2017-6742 to perform reconnaissance, enumerate router interfaces and deploy custom malware known as "Jaguar Tooth", as detailed in the NCSC’s Jaguar Tooth malware analysis report. This malware obtains further device information which is then exfiltrated over trivial file transfer protocol (TFTP) and enables unauthenticated access via a backdoor.
References
CVE-2017-6742 Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability secondary_impact T1048 Exfiltration Over Alternative Protocol
Comments
CVE-2017-6742 is a Simple Network Management Protocol (SNMP) vulnerability in Cisco products related to a buffer overflow condition in the SNMP subsystem. Reported by the NCSC, threat actors exploited CVE-2017-6742 to perform reconnaissance, enumerate router interfaces and deploy custom malware known as "Jaguar Tooth", as detailed in the NCSC’s Jaguar Tooth malware analysis report. This malware obtains further device information which is then exfiltrated over trivial file transfer protocol (TFTP) and enables unauthenticated access via a backdoor.
References