CVE-2018-7284

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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://downloads.asterisk.org/pub/security/AST-2018-004.html	Patch Vendor Advisory
http://www.securitytracker.com/id/1040416	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/103151	Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/44184/	Exploit Third Party Advisory VDB Entry
https://www.debian.org/security/2018/dsa-4320	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:digium:asterisk::::::::
	cpe:2.3:a:digium:asterisk::::::::
	cpe:2.3:a:digium:asterisk::::::::

Configuration 2 (hide)

OR	cpe:2.3:a:digium:certified_asterisk:13.18:cert1::::::
	cpe:2.3:a:digium:certified_asterisk:13.18:cert2::::::

Configuration 3 (hide)

cpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2018-02-21 16:29

Updated : 2019-03-01 10:54

NVD link : CVE-2018-7284

Mitre link : CVE-2018-7284

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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Products Affected

digium

certified_asterisk
asterisk

debian

debian_linux

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