Executive Summary

Informations
Name CVE-2017-17850 First vendor Publication 2017-12-27
Vendor Cve Last vendor Modification 2018-11-25

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None 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:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and older, and 13.18-cert1 and older. A select set of SIP messages create a dialog in Asterisk. Those SIP messages must contain a contact header. For those messages, if the header was not present and the PJSIP channel driver was used, Asterisk would crash. The severity of this vulnerability is somewhat mitigated if authentication is enabled. If authentication is enabled, a user would have to first be authorized before reaching the crash point.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17850

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 965
Application 4

Nessus® Vulnerability Scanner

Date Description
2018-11-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201811-11.nasl - Type : ACT_GATHER_INFO
2018-01-15 Name : The remote Fedora host is missing a security update.
File : fedora_2017-41242dfe10.nasl - Type : ACT_GATHER_INFO
2018-01-04 Name : A telephony application running on the remote host is affected by a remote de...
File : asterisk_ast_2017_014.nasl - Type : ACT_GATHER_INFO
2017-12-26 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_2a3bc6ace7c611e7a90b001999f8d30b.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
CONFIRM http://downloads.asterisk.org/pub/security/AST-2017-014.html
https://issues.asterisk.org/jira/browse/ASTERISK-27480
GENTOO https://security.gentoo.org/glsa/201811-11
SECTRACK http://www.securitytracker.com/id/1040056

Alert History

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Date Informations
2020-05-23 02:04:45
  • Multiple Updates
2020-05-23 00:58:29
  • Multiple Updates
2019-07-10 12:08:51
  • Multiple Updates
2019-06-18 12:08:34
  • Multiple Updates
2019-04-03 12:07:27
  • Multiple Updates
2019-03-19 12:08:54
  • Multiple Updates
2018-11-25 17:20:01
  • Multiple Updates
2018-06-14 12:05:35
  • Multiple Updates
2018-01-10 21:22:57
  • Multiple Updates
2017-12-27 21:22:10
  • First insertion