CVSS2
Attack Vector
NETWORK
Attack 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
EPSS
Percentile
99.6%
Issue Overview:
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)
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)
A missing return statement in the receive() function could potentially allow a remote attacker to bypass NTP’s authentication mechanism. (CVE-2014-9296)
Affected Packages:
ntp
Issue Correction:
Run yum update ntp to update your system.
New Packages:
i686:
ntp-perl-4.2.6p5-2.22.amzn1.i686
ntp-debuginfo-4.2.6p5-2.22.amzn1.i686
ntp-4.2.6p5-2.22.amzn1.i686
ntpdate-4.2.6p5-2.22.amzn1.i686
noarch:
ntp-doc-4.2.6p5-2.22.amzn1.noarch
src:
ntp-4.2.6p5-2.22.amzn1.src
x86_64:
ntp-4.2.6p5-2.22.amzn1.x86_64
ntp-perl-4.2.6p5-2.22.amzn1.x86_64
ntpdate-4.2.6p5-2.22.amzn1.x86_64
ntp-debuginfo-4.2.6p5-2.22.amzn1.x86_64
Red Hat: CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, CVE-2014-9296
Mitre: CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, CVE-2014-9296
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | ntp-perl | < 4.2.6p5-2.22.amzn1 | ntp-perl-4.2.6p5-2.22.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | ntp-debuginfo | < 4.2.6p5-2.22.amzn1 | ntp-debuginfo-4.2.6p5-2.22.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | ntp | < 4.2.6p5-2.22.amzn1 | ntp-4.2.6p5-2.22.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | ntpdate | < 4.2.6p5-2.22.amzn1 | ntpdate-4.2.6p5-2.22.amzn1.i686.rpm |
Amazon Linux | 1 | noarch | ntp-doc | < 4.2.6p5-2.22.amzn1 | ntp-doc-4.2.6p5-2.22.amzn1.noarch.rpm |
Amazon Linux | 1 | x86_64 | ntp | < 4.2.6p5-2.22.amzn1 | ntp-4.2.6p5-2.22.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | ntp-perl | < 4.2.6p5-2.22.amzn1 | ntp-perl-4.2.6p5-2.22.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | ntpdate | < 4.2.6p5-2.22.amzn1 | ntpdate-4.2.6p5-2.22.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | ntp-debuginfo | < 4.2.6p5-2.22.amzn1 | ntp-debuginfo-4.2.6p5-2.22.amzn1.x86_64.rpm |