Exploitation Summary
CVE-2017-3881 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added March 25, 2022.
EIP tracks 9 public exploits from researchers including Artem Kondratenko, artkond, 1337g, including a Metasploit module auxiliary/dos/cisco/ios_telnet_rocem.
A Nuclei detection template is also available.
AI-analyzed exploit summary This exploit leverages a buffer overflow in Cisco Catalyst 2960 switches to patch the execution flow, enabling credential-less telnet access with privilege level 15. It uses ROP gadgets to manipulate memory and bypass authentication.
Description
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: (1) the failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device; and (2) the incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. This affects Catalyst switches, Embedded Service 2020 switches, Enhanced Layer 2 EtherSwitch Service Module, Enhanced Layer 2/3 EtherSwitch Service Module, Gigabit Ethernet Switch Module (CGESM) for HP, IE Industrial Ethernet switches, ME 4924-10GE switch, RF Gateway 10, and SM-X Layer 2/3 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893.
Exploits (9)
This exploit leverages a buffer overflow in Cisco Catalyst 2960 switches to patch the execution flow, enabling credential-less telnet access with privilege level 15. It uses ROP gadgets to manipulate memory and bypass authentication.
This exploit targets CVE-2017-3881, a buffer overflow vulnerability in Cisco IOS telnet service. It uses ROP gadgets to bypass authentication and set privilege level 15 (admin) by manipulating memory structures.
This repository contains a working Proof-of-Concept exploit for CVE-2017-3881, a remote code execution vulnerability in Cisco IOS. The exploit leverages a buffer overflow in the Cisco Cluster Management Protocol (CMP) to achieve privilege escalation on Cisco Catalyst 2960 switches running specific firmware versions.
This repository contains a working Proof-of-Concept exploit for CVE-2017-3881, a remote code execution vulnerability in Cisco IOS. The exploit leverages a buffer overflow in the Cisco Cluster Management Protocol (CMP) to achieve privilege escalation on Cisco Catalyst 2960 switches running specific firmware versions.
This is a Metasploit auxiliary module that exploits CVE-2017-3881, a vulnerability in Cisco IOS and IOS XE Software's Cluster Management Protocol (CMP) processing. It triggers a Denial of Service (DoS) by sending a malformed Telnet packet to the target device.
This repository contains a working PoC for CVE-2017-3881, a vulnerability in Cisco IOS telnet service affecting multiple Cisco switches. It includes both a Denial of Service (DoS) Metasploit module and RCE exploits for specific firmware versions of Cisco Catalyst 2960 switches.
This is a working proof-of-concept exploit for CVE-2017-3881, a buffer overflow vulnerability in Cisco Catalyst 2960 switches. The exploit leverages a crafted payload sent via telnet to achieve remote code execution, enabling credless authentication with privilege level 15.
This repository contains the RouterSploit framework, an open-source exploitation framework for embedded devices, including exploits, scanners, and credential testing modules. It includes functional exploit code for various vulnerabilities, including CVE-2017-3881, which is a remote code execution vulnerability in Cisco IOS and IOS XE software.
This Metasploit module exploits a Denial of Service (DoS) vulnerability in Cisco IOS telnet service by sending a malformed packet. It targets Cisco Catalyst switches and triggers a crash in the telnet service.
Nuclei Templates (1)
product:"cisco ios http config" || cpe:"cpe:2.3:o:cisco:ios"
References (7)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H