Input validation error in ntp

1) Input validation error

EUVDB-ID: #VU31741

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-9750

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled, allows remote attackers to obtain sensitive information from process memory or cause a denial of service (daemon crash) via a packet containing an extension field with an invalid value for the length of its value field.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ntp: 4.2.0 - 4.2.7p483

CPE2.3

• cpe:2.3:a:ntp_org:ntp:4.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:ntp_org:ntp:4.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:ntp_org:ntp:4.2.2p1:*:*:*:*:*:*:*

External links

https://bugs.ntp.org/show_bug.cgi?id=2671
https://rhn.redhat.com/errata/RHSA-2015-1459.html
https://support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne
https://www.debian.org/security/2015/dsa-3388
https://www.kb.cert.org/vuls/id/852879
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://www.securityfocus.com/bid/72583
https://bugzilla.redhat.com/show_bug.cgi?id=1184573
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.