Executive Summary

Informations
Name CVE-2021-34720 First vendor Publication 2021-09-09
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Overall CVSS Score 8.6
Base Score 8.6 Environmental Score 8.6
impact SubScore 4 Temporal Score 8.6
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34720

CPE : Common Platform Enumeration

TypeDescriptionCount
Hardware 1
Os 271

Sources (Detail)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...
Source Url

Alert History

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Date Informations
2024-11-28 13:57:54
  • Multiple Updates
2024-10-09 02:22:29
  • Multiple Updates
2024-10-08 02:22:49
  • Multiple Updates
2024-10-03 13:19:04
  • Multiple Updates
2024-07-26 02:18:29
  • Multiple Updates
2023-11-07 21:34:03
  • Multiple Updates
2023-09-20 02:12:41
  • Multiple Updates
2022-10-26 00:27:41
  • Multiple Updates
2022-05-05 01:58:11
  • Multiple Updates
2021-11-06 12:50:01
  • Multiple Updates
2021-09-22 21:23:22
  • Multiple Updates
2021-09-09 12:44:14
  • First insertion