Cisco IOS XR NCS 6000 Multiple ntpd Vulnerabilities

High Nessus Plugin ID 81913

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VPR Score: 6.7

Synopsis

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

Description

The remote Cisco device is running a version of IOS XR 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 Cisco bug ID CSCus27229.

See Also

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

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

Plugin Details

Severity: High

ID: 81913

File Name: cisco-sn-CSCus27229-iosxr.nasl

Version: 1.11

Type: local

Family: CISCO

Published: 2015/03/18

Updated: 2019/11/22

Dependencies: 71430

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

Required KB Items: Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/03/03

Vulnerability Publication Date: 2014/12/19

Reference Information

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

BID: 71757, 71758, 71761, 71762

CERT: 852879

CISCO-BUG-ID: CSCus27229