Vulnerability CVE-2019-12827

Vulnerability Name:

CVE-2019-12827 (CCN-163680)

Assigned:

2019-06-13

Published:

2019-06-13

Updated:

2021-07-21

Summary:

Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allows remote authenticated users to crash Asterisk by sending a specially crafted SIP MESSAGE message.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

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

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

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

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-119

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2019-12827

Source: CCN
Type: Asterisk Project Security Advisory - AST-2019-002
Remote crash vulnerability with MESSAGE messages

Source: CONFIRM
Type: Vendor Advisory
http://downloads.digium.com/pub/security/AST-2019-002.html

Source: XF
Type: UNKNOWN
asterisk-cve201912827-dos(163680)

Source: CONFIRM
Type: Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-28447

Vulnerable Configuration:

Configuration 1:

cpe:/a:digium:certified_asterisk:13.21:cert1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.4.0)

OR cpe:/a:digium:asterisk:*:*:*:*:*:*:*:* (Version >= 13.0.0 and < 13.27.0)

OR cpe:/a:digium:certified_asterisk:13.21:cert1-rc1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.21:cert1-rc2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.21:cert2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.21:cert3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:*:*:*:*:*:*:*:* (Version >= 15.0.0 and < 15.7.2)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.cosmic:def:2019128270000000	V	CVE-2019-12827 on Ubuntu 18.10 (cosmic) - untriaged.	2019-07-12
oval:com.ubuntu.bionic:def:2019128270000000	V	CVE-2019-12827 on Ubuntu 18.04 LTS (bionic) - medium.	2019-07-12
oval:com.ubuntu.xenial:def:2019128270000000	V	CVE-2019-12827 on Ubuntu 16.04 LTS (xenial) - medium.	2019-07-12
oval:com.ubuntu.disco:def:2019128270000000	V	CVE-2019-12827 on Ubuntu 19.04 (disco) - untriaged.	2019-07-12

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