Information disclosure in Cisco Nexus 9000 Series Switches

1) Information disclosure

EUVDB-ID: #VU779

Risk: Low

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

CVE-ID: CVE-2016-1455

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote unauthenticared user to potentially sensitive information.
The weakness is caused by insufficient access control. By connecting to TCP or UDP ports on the target system attackers can cause iptables configuration flaw that may lets to access important files.
Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Mitigation

Update to version 7.0(3)I2(2e) or 7.0(3)I4(1).

Vulnerable software versions

Cisco Nexus 9000 Series Switches: 4.0.179 - 7.0.3 I1.1

CPE2.3

• cpe:2.3:h:cisco_systems:cisco_nexus_9000_series_switches:4.0.179:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_nexus_9000_series_switches:6.1.2 I1.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_nexus_9000_series_switches:6.1.2 I2.2a:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-n9kinfo

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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