National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-7285 Detail

Current Description

A NULL pointer access issue was discovered in Asterisk 15.x through 15.2.1. The RTP support in Asterisk maintains its own registry of dynamic codecs and desired payload numbers. While an SDP negotiation may result in a codec using a different payload number, these desired ones are still stored internally. When an RTP packet was received, this registry would be consulted if the payload number was not found in the negotiated SDP. This registry was incorrectly consulted for all packets, even those which are dynamic. If the payload number resulted in a codec of a different type than the RTP stream (for example, the payload number resulted in a video codec but the stream carried audio), a crash could occur if no stream of that type had been negotiated. This was due to the code incorrectly assuming that a stream of that type would always exist.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://downloads.asterisk.org/pub/security/AST-2018-001.html Patch Vendor Advisory
http://www.securityfocus.com/bid/103149 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040415 Third Party Advisory VDB Entry

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
15.0.0
Up to (including)
15.2.1


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-7285
NVD Published Date:
02/21/2018
NVD Last Modified:
03/21/2018