Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-19278

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
14/11/2018
Last modified:
30/12/2018

Description

Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:digium:asterisk:15.0.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.0.0:b1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.4:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.1.5:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.2.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.2.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:15.3.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools