Executive Summary

Informations
Name CVE-2020-28242 First vendor Publication 2020-11-06
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged 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:L/Au:S/C:N/I:N/A:P)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28242

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-674 Uncontrolled Recursion

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 36
Application 472
Os 1
Os 1

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
MISC http://downloads.asterisk.org/pub/security/AST-2020-002.html
MLIST https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html

Alert History

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Date Informations
2023-11-07 21:36:21
  • Multiple Updates
2022-09-07 12:49:27
  • Multiple Updates
2022-06-05 09:27:20
  • Multiple Updates
2022-04-26 01:50:47
  • Multiple Updates
2022-04-03 13:23:10
  • Multiple Updates
2022-01-01 21:23:04
  • Multiple Updates
2021-05-04 13:51:51
  • Multiple Updates
2021-04-22 03:03:27
  • Multiple Updates
2020-11-28 09:22:45
  • Multiple Updates
2020-11-20 21:23:27
  • Multiple Updates
2020-11-07 01:30:35
  • Multiple Updates
2020-11-07 01:28:54
  • Multiple Updates
2020-11-06 17:22:51
  • Multiple Updates
2020-11-06 12:28:52
  • First insertion