National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-16671 Detail

Current Description

A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.8 HIGH
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 2.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://downloads.digium.com/pub/security/AST-2017-010.html Vendor Advisory
http://www.securityfocus.com/bid/101760 Third Party Advisory VDB Entry
https://issues.asterisk.org/jira/browse/ASTERISK-27337 Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/201811-11
https://www.debian.org/security/2017/dsa-4076

Technical Details

Vulnerability Type (View All)

  • Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/a:digium:asterisk
     Show Matching CPE(s)
From (including)
13.0.0
Up to (excluding)
13.18.1
 cpe:/a:digium:asterisk
     Show Matching CPE(s)
From (including)
14.0.0
Up to (excluding)
14.7.1
 cpe:/a:digium:asterisk
     Show Matching CPE(s)
From (including)
15.0.0
Up to (excluding)
15.1.1

Configuration 2 ( hide )
 cpe:/a:digium:certified_asterisk:13.13.0
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert1
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert1_rc1
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert1_rc2
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert1_rc3
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert1_rc4
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert2
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert3
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert4
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert5
     Show Matching CPE(s)
 cpe:/a:digium:certified_asterisk:13.13.0:cert6
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-16671
NVD Published Date:
11/08/2017
NVD Last Modified:
11/25/2018