var-202002-0712
Vulnerability from variot
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Armis Security found that CDP supported devices are vulnerable to heap overflow in Cisco IP Cameras (CVE-2020-3110), stack overflow in Cisco VoIP devices (CVE-2020-3111), a format string stack overflow vulnerability (CVE-2020-3118), stack overflow and arbitrary write (CVE-2020-3119), and a resource exhaustion denial-of-service vulnerability (CVE-2020-3120) in Cisco NX-OS switches and Cisco IOS XR Routers, among others. CVE-2020-3110Cisco's Video Surveillance 8000 Series IP cameras with CDP enabled are vulnerable to a heap overflow in the parsing of DeviceID type-length-value (TLV). The CVSS score reflected below is in regards to this vulnerability. CVE-2020-3111Cisco Voice over Internet Protocol (VoIP) phones with CDP enabled are vulnerable to a stack overflow in the parsing of PortID type-length-value (TLV).CVE-2020-3118Cisco's CDP subsystem of devices running, or based on, Cisco IOS XR Software are vulnerable to improper validation of string input from certain fields within a CDP message that could lead to a stack overflow.CVE-2020-3119Cisco's CDP subsystem of devices running, or based on, Cisco NX-OS Software is vulnerable to a stack buffer overflow and arbitrary write in the parsing of Power over Ethernet (PoE) type-length-value (TLV).CVE-2020-3120Cisco's CDP subsystem of devices running, or based on, Cisco NX-OS, IOS XR, and FXOS Software are vulnerable to a resource exhaustion denial-of-service condition. It is important to note that for all affected devices, CDP is enabled by default. A complete list of the affected products can be found in the following Cisco advisories:CVE-2020-3110 affected products can be found here.CVE-2020-3111 affected products can be found here.CVE-2020-3118 affected products can be found here.CVE-2020-3119 affected products can be found here.CVE-2020-3120 affected products can be found here. Cisco IOS XR The software contains a vulnerability in format strings.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. Cisco IOS XR is an operating system developed by Cisco for its network equipment
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"data": "Thanks to Ben Seri of Armis Security for reporting this vulnerability.This document was written by Madison Oliver. ",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.