Cisco IOS XR GNU C Library (glibc) Buffer Overflow (GHOST)

Critical Nessus Plugin ID 81596

Synopsis

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

Description

The remote Cisco device is running a version of Cisco IOS XR software that is potentially affected by a heap-based buffer overflow vulnerability in the GNU C Library (glibc) due to improperly validated user-supplied input to the __nss_hostname_digits_dots(), gethostbyname(), and gethostbyname2() functions. This allows a remote attacker to cause a buffer overflow, resulting in a denial of service condition or the execution of arbitrary code.

Note that this issue only affects Cisco Network Convergence System 6000 Series routers.

Solution

Apply the relevant patch referenced in Cisco bug ID CSCus69517.

See Also

https://tools.cisco.com/bugsearch/bug/CSCus69517

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

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

Plugin Details

Severity: Critical

ID: 81596

File Name: cisco-sa-20150128-ghost-iosxr_NCS6K.nasl

Version: 1.10

Type: local

Family: CISCO

Published: 2015/03/02

Updated: 2019/11/25

Dependencies: 71430

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

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/02/18

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

CERT: 967332

CISCO-BUG-ID: CSCus69517

CISCO-SA: cisco-sa-20150128-ghost