Executive Summary

Informations
Name CVE-2018-7284 First vendor Publication 2018-02-21
Vendor Cve Last vendor Modification 2019-03-01

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

A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7284

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 970
Application 273
Os 1

Snort® IPS/IDS

Date Description
2019-09-19 Digium Asterisk multiple malformed Accept headers denial of service attempt
RuleID : 51087 - Revision : 1 - Type : PROTOCOL-VOIP
2019-09-19 Digium Asterisk multiple malformed Accept headers denial of service attempt
RuleID : 51086 - Revision : 1 - Type : PROTOCOL-VOIP

Nessus® Vulnerability Scanner

Date Description
2018-10-17 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4320.nasl - Type : ACT_GATHER_INFO
2018-03-02 Name : A telephony application running on the remote host is affected by multiple vu...
File : asterisk_ast_2018_001-006.nasl - Type : ACT_GATHER_INFO
2018-03-02 Name : A telephony application running on the remote host is affected by a Subscribe...
File : asterisk_ast_2018_002-005.nasl - Type : ACT_GATHER_INFO
2018-02-23 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_933654ce17b811e890b8001999f8d30b.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/103151
CONFIRM http://downloads.asterisk.org/pub/security/AST-2018-004.html
DEBIAN https://www.debian.org/security/2018/dsa-4320
EXPLOIT-DB https://www.exploit-db.com/exploits/44184/
SECTRACK http://www.securitytracker.com/id/1040416

Alert History

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Date Informations
2020-05-23 02:20:04
  • Multiple Updates
2020-05-23 01:19:08
  • Multiple Updates
2019-03-01 21:19:06
  • Multiple Updates
2018-12-21 12:09:28
  • Multiple Updates
2018-10-30 12:11:47
  • Multiple Updates
2018-10-17 17:19:43
  • Multiple Updates
2018-06-14 12:06:18
  • Multiple Updates
2018-03-19 21:19:51
  • Multiple Updates
2018-03-02 09:19:33
  • Multiple Updates
2018-02-28 09:20:26
  • Multiple Updates
2018-02-24 09:20:11
  • Multiple Updates
2018-02-22 05:18:52
  • First insertion