7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
The Network Time Protocol (NTP) is used to synchronize a computer’s time with a referenced time source. Multiple buffer overflow flaws were discovered in ntpd’s crypto_recv(), ctl_putdata(), and configure() functions. A remote attacker could use either of these flaws to send a specially crafted request packet that could crash ntpd or, potentially, execute arbitrary code with the privileges of the ntp user. Note: the crypto_recv() flaw requires non-default configurations to be active, while the ctl_putdata() flaw, by default, can only be exploited via local attackers, and the configure() flaw requires additional authentication to exploit. (CVE-2014-9295) It was found that ntpd automatically generated weak keys for its internal use if no ntpdc request authentication key was specified in the ntp.conf configuration file. A remote attacker able to match the configured IP restrictions could guess the generated key, and possibly use it to send ntpdc query or configuration requests. (CVE-2014-9293) It was found that ntp-keygen used a weak method for generating MD5 keys. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server. Note: it is recommended to regenerate any MD5 keys that had explicitly been generated with ntp-keygen; the default installation does not contain such keys). (CVE-2014-9294) A missing return statement in the receive() function could potentially allow a remote attacker to bypass NTP’s authentication mechanism. (CVE-2014-9296) All ntp users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. After installing the update, the ntpd daemon will restart automatically.
advisories.mageia.org/MGASA-2014-0541.html
bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548acc4dN1TbM1tRJrbPcA4yc1aTdA
bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548acdf3tUSFizXcv_X4b77Jt_Y-cg
bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548acf55dxKfhb6MuYQwzu8eDlS97g
bugs.ntp.org/show_bug.cgi?id=2667
bugs.ntp.org/show_bug.cgi?id=2668
bugs.ntp.org/show_bug.cgi?id=2669
lists.opensuse.org/opensuse-security-announce/2014-12/msg00020.html
marc.info/?l=bugtraq&m=142469153211996&w=2
marc.info/?l=bugtraq&m=142590659431171&w=2
marc.info/?l=bugtraq&m=142853370924302&w=2
marc.info/?l=bugtraq&m=144182594518755&w=2
rhn.redhat.com/errata/RHSA-2014-2025.html
rhn.redhat.com/errata/RHSA-2015-0104.html
secunia.com/advisories/62209
support.ntp.org/bin/view/Main/SecurityNotice
www.kb.cert.org/vuls/id/852879
www.mandriva.com/security/advisories?name=MDVSA-2015:003
www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
www.securityfocus.com/bid/71761
www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-417665.htm
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1176037
h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232
h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04916783
help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes
kc.mcafee.com/corporate/index?page=content&id=SB10103
rhn.redhat.com/errata/RHSA-2014-2024.html
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20141222-ntpd
www.arista.com/en/support/advisories-notices/security-advisories/1047-security-advisory-8