Cisco NX-OS GNU C Library (glibc) Buffer Overflow (GHOST)

Critical Nessus Plugin ID 92412

Synopsis

The remote device is affected by a remote code execution vulnerability.

Description

The version of Cisco NX-OS software running on the remote device is affected by a remote code execution vulnerability known as GHOST. A heap-based buffer overflow condition exists in the GNU C Library (glibc) due to improper validation of user-supplied input to the glibc functions __nss_hostname_digits_dots(), gethostbyname(), and gethostbyname2(). An unauthenticated, remote attacker can exploit this to cause a buffer overflow, resulting in a denial of service condition or the execution of arbitrary code.

Solution

Upgrade to the relevant fixed version referenced in the vendor advisory.

See Also

http://www.nessus.org/u?fd2144f8

http://www.nessus.org/u?c7a6ddbd

Plugin Details

Severity: Critical

ID: 92412

File Name: cisco-sa-20150128-ghost-nxos.nasl

Version: 1.10

Type: combined

Family: CISCO

Published: 2016/07/19

Updated: 2019/11/14

Dependencies: 66696

Risk Information

Risk Factor: Critical

CVSS Score Source: CVE-2015-0235

CVSS v2.0

Base Score: 10

Temporal Score: 8.7

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

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

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/01/28

Vulnerability Publication Date: 2015/01/27

Exploitable With

Core Impact

Metasploit (Exim GHOST (glibc gethostbyname) Buffer Overflow)

Reference Information

CVE: CVE-2015-0235

BID: 72325