Detections
Analytics

Cisco NX-OS Multiple ntpd Vulnerabilities

high Nessus Plugin ID 81911

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The remote Cisco device is running a version of NX-OS software that is affected by the following vulnerabilities :

 - Errors exist related to weak cryptographic pseudorandom number generation (PRNG), the functions 'ntp_random' and and 'config_auth', and the 'ntp-keygen' utility. A man-in-the-middle attacker can exploit these to disclose sensitive information. (CVE-2014-9293, CVE-2014-9294)

 - Multiple stack-based buffer overflow errors exist in the Network Time Protocol daemon (ntpd), which a remote attacker can exploit to execute arbitrary code or cause a denial of service by using a specially crafted packet.
 (CVE-2014-9295)

 - An error exists in the 'receive' function in the Network Time Protocol daemon (ntpd) that allows denial of service attacks. (CVE-2014-9296)

Solution

Apply the relevant patch or workaround referenced in the noted Cisco bugs.

See Also

http://www.nessus.org/u?292ffa4a

https://www.securityfocus.com/archive/1/534319

Plugin Details

Severity: High

ID: 81911

File Name: cisco-sa-20141222-ntpd-nxos.nasl

Version: 1.13

Type: combined

Family: CISCO

Published: 3/18/2015

Updated: 11/22/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: cpe:/o:cisco:nx-os

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 3/4/2015

Vulnerability Publication Date: 12/19/2014

Reference Information

CVE: CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, CVE-2014-9296

BID: 71757, 71758, 71761, 71762