National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-13704 Detail

Current Description

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

Source:  MITRE      Last Modified:  10/02/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-13704
Original release date:
10/02/2017
Last revised:
12/29/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 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 (legend)
Impact Score:
3.6
Exploitability Score:
3.9
CVSS Version 3 Metrics:
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
CVSS Severity (version 2.0):
CVSS v2 Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://thekelleys.org.uk/dnsmasq/CHANGELOG Release Notes; Vendor Advisory External Source CONFIRM http://thekelleys.org.uk/dnsmasq/CHANGELOG
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=63437ffbb58837b214b4b92cb1c54bc5f3279928 Patch; Vendor Advisory External Source CONFIRM http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=63437ffbb58837b214b4b92cb1c54bc5f3279928
http://www.securityfocus.com/bid/101085 Third Party Advisory; VDB Entry External Source BID 101085
http://www.securityfocus.com/bid/101977 External Source BID 101977
http://www.securitytracker.com/id/1039474 Third Party Advisory; VDB Entry External Source SECTRACK 1039474
https://access.redhat.com/security/vulnerabilities/3199382 Issue Tracking; Third Party Advisory External Source CONFIRM https://access.redhat.com/security/vulnerabilities/3199382
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4TK6DWC53WSU6633EVZL7H4PCWBYHMHK/ Third Party Advisory External Source FEDORA FEDORA-2017-274d763ed8
https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html Third Party Advisory External Source MISC https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11664.html Mailing List; Third Party Advisory External Source MLIST [dnsmasq-discuss] 20171002 IMPORTANT SECURITY INFORMATION.
https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11665.html Mailing List; Third Party Advisory External Source MLIST [dnsmasq-discuss] 20171002 Announce: dnsmasq-2.78.
https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq External Source CONFIRM https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq

Technical Details

Vulnerability Type (View All)

Change History 6 change records found - show changes