CVE-2015-3405

CVSS V2 Medium 5 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2015-3405
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2017-08-09T16:29:00
  • Last Modified Date
  • 2023-02-13T00:49:44
Weakness Enumerations
CWE URL
CWE-331 http://cwe.mitre.org/data/definitions/331.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.9:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:suse_linux_enterprise_server:11.0:sp3:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse_project:suse_linux_enterprise_desktop:11.0:sp3:*:*:*:*:*:* 1 OR
cpe:2.3:o:suse:suse_linux_enterprise_server:11.0:sp3:*:*:*:vmware:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_from_rhui_6:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
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://access.redhat.com/errata/RHSA-2015:1459
https://access.redhat.com/errata/RHSA-2015:2231
https://access.redhat.com/security/cve/CVE-2015-3405
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2015-3405
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3405
History
Created Old Value New Value Data Type Notes
2022-05-10 17:30:20 Added to TrackCVE
2022-12-02 19:47:09 2017-08-09T16:29Z 2017-08-09T16:29:00 CVE Published Date updated
2022-12-02 19:47:09 2020-05-28T14:08:04 CVE Modified Date updated
2022-12-02 19:47:09 Modified Vulnerability Status updated
2023-02-02 16:06:39 2023-02-02T15:16:45 CVE Modified Date updated
2023-02-02 16:06:39 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. Description updated
2023-02-02 16:06:41 References updated
2023-02-13 01:07:08 2023-02-13T00:49:44 CVE Modified Date updated
2023-02-13 01:07:09 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. Description updated