NVD

NOTICE UPDATED - May, 29th 2024

The NVD has a new announcement page with status updates, news, and how to stay connected!

CVE-2015-3405 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.5 HIGH

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.0 MEDIUM

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

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink	Resource
http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg	Third Party Advisory Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html	Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1459.html	Third Party Advisory VDB Entry
http://rhn.redhat.com/errata/RHSA-2015-2231.html	Third Party Advisory VDB Entry
http://www.debian.org/security/2015/dsa-3223	Third Party Advisory
http://www.debian.org/security/2015/dsa-3388	Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/04/23/14	Mailing List Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/74045	Third Party Advisory VDB Entry
https://bugs.ntp.org/show_bug.cgi?id=2797	Issue Tracking Third Party Advisory Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1210324	Issue Tracking Patch Third Party Advisory VDB Entry
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-331	Insufficient Entropy	NIST

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

8 change records found show changes

CVE Modified by Red Hat, Inc. 2/12/2023 7:49:44 PM

Action	Type	Old Value	New Value
Removed	CVSS V2	Red Hat, Inc. (AV:N/AC:H/Au:N/C:P/I:P/A:N)
Removed	CVSS V2 Metadata	Access Complexity Insufficient Information
Changed	Description	A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server.	ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.
Removed	Reference	https://access.redhat.com/errata/RHSA-2015:1459 [No Types Assigned]
Removed	Reference	https://access.redhat.com/errata/RHSA-2015:2231 [No Types Assigned]
Removed	Reference	https://access.redhat.com/security/cve/CVE-2015-3405 [No Types Assigned]

CVE Modified by Red Hat, Inc. 2/02/2023 10:16:46 AM

Action	Type	Old Value	New Value
Added	CVSS V2		Red Hat, Inc. (AV:N/AC:H/Au:N/C:P/I:P/A:N)
Changed	Description	ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.	A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server.
Added	Reference		https://access.redhat.com/errata/RHSA-2015:1459 [No Types Assigned]
Added	Reference		https://access.redhat.com/errata/RHSA-2015:2231 [No Types Assigned]
Added	Reference		https://access.redhat.com/security/cve/CVE-2015-3405 [No Types Assigned]

Initial Analysis by NIST 8/25/2017 10:55:58 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 671 characters. View Entire Change Record OR cpe:2.3:a:ntp:ntp:4.2.8:p1::::::* cpe:2.3:a:ntp:ntp:4.2.8:p2::::::* cpe:2.3:a:ntp:ntp:4.2.8:p2_rc1::::::* cpe:2.3:a:ntp:ntp:4.3.0::::::: cpe:2.3:a:ntp:ntp:4.3.1::::::: cpe:2.3:a:ntp:ntp:4.3.2::::::: cpe:2.3:a:ntp:ntp:4.3.3::::::: cpe:2.3:a:ntp:ntp:4.3.4::::::: cpe:2.3:a:ntp:ntp:4.3.5::::::: cpe:2.3:a:ntp:ntp:4.3.6::::::: cpe:2.3:a:ntp:ntp:4.3.7::::::: *
Added	CPE Configuration		OR cpe:2.3:o:debian:debian_linux:7.0::::::: cpe:2.3:o:debian:debian_linux:8.0:::::::
Added	CPE Configuration		OR cpe:2.3:o:fedoraproject:fedora:21:::::::
Added	CPE Configuration		OR cpe:2.3:o:opensuse:suse_linux_enterprise_server:11.0:sp3::::::* cpe:2.3:o:opensuse_project:suse_linux_enterprise_desktop:11.0:sp3::::::* cpe:2.3:o:suse:suse_linux_enterprise_server:11.0:sp3::::vmware::
Added	CPE Configuration		Record truncated, showing 500 of 518 characters. View Entire Change Record OR cpe:2.3:o:redhat:enterprise_linux_desktop:6.0::::::: cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:6.0::::::: cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:6.0::::::: cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:6.0::::::: cpe:2.3:o:redhat:enterprise_linux_server:6.0::::::: cpe:2.3:o:redhat:enterprise_linux_server_from_rhui_6:6.0::::::: *cpe:2.3:o:redhat:enterprise_linux_workstation
Added	CVSS V2		(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Added	CVSS V3		AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added	CWE		CWE-331
Changed	Reference Type	http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg No Types Assigned	http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg Third Party Advisory, Vendor Advisory
Changed	Reference Type	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html No Types Assigned	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html Third Party Advisory
Changed	Reference Type	http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html No Types Assigned	http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html Third Party Advisory
Changed	Reference Type	http://rhn.redhat.com/errata/RHSA-2015-1459.html No Types Assigned	http://rhn.redhat.com/errata/RHSA-2015-1459.html Third Party Advisory, VDB Entry
Changed	Reference Type	http://rhn.redhat.com/errata/RHSA-2015-2231.html No Types Assigned	http://rhn.redhat.com/errata/RHSA-2015-2231.html Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.debian.org/security/2015/dsa-3223 No Types Assigned	http://www.debian.org/security/2015/dsa-3223 Third Party Advisory
Changed	Reference Type	http://www.debian.org/security/2015/dsa-3388 No Types Assigned	http://www.debian.org/security/2015/dsa-3388 Third Party Advisory
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2015/04/23/14 No Types Assigned	http://www.openwall.com/lists/oss-security/2015/04/23/14 Mailing List, Third Party Advisory
Changed	Reference Type	http://www.securityfocus.com/bid/74045 No Types Assigned	http://www.securityfocus.com/bid/74045 Third Party Advisory, VDB Entry
Changed	Reference Type	https://bugs.ntp.org/show_bug.cgi?id=2797 No Types Assigned	https://bugs.ntp.org/show_bug.cgi?id=2797 Issue Tracking, Third Party Advisory, Vendor Advisory
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=1210324 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=1210324 Issue Tracking, Patch, Third Party Advisory, VDB Entry

Quick Info

CVE Dictionary Entry:
CVE-2015-3405
NVD Published Date:
08/09/2017
NVD Last Modified:
02/12/2023
Source:
Red Hat, Inc.

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2015-3405 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by Red Hat, Inc. 5/13/2024 11:34:14 PM

CVE Modified by Red Hat, Inc. 2/12/2023 7:49:44 PM

CVE Modified by Red Hat, Inc. 2/02/2023 10:16:46 AM

CPE Deprecation Remap by NIST 5/28/2020 10:08:08 AM

CVE Modified by Red Hat, Inc. 8/28/2018 6:29:00 AM

CVE Modified by Red Hat, Inc. 1/29/2018 9:29:00 PM

Initial Analysis by NIST 8/25/2017 10:55:58 AM

CVE Modified by Red Hat, Inc. 8/09/2017 9:29:00 PM

Quick Info