Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2020-35776 First vendor Publication 2021-02-18
Vendor Cve Last vendor Modification 2021-02-24

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 None User Interaction Required
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: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 buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35776

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 932

Sources (Detail)

Source Url
CONFIRM https://downloads.asterisk.org/pub/security/AST-2021-001.html
https://issues.asterisk.org/jira/browse/ASTERISK-29227
FULLDISC http://seclists.org/fulldisclosure/2021/Feb/57
MISC http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisor...
https://issues.asterisk.org/

Alert History

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Date Informations
2021-08-07 12:38:42
  • Multiple Updates
2021-05-04 13:53:09
  • Multiple Updates
2021-04-22 03:03:57
  • Multiple Updates
2021-03-26 12:34:54
  • Multiple Updates
2021-02-19 21:23:21
  • Multiple Updates
2021-02-19 05:22:54
  • Multiple Updates
2021-02-19 00:22:54
  • First insertion