Cisco NX-OS DHCPv4 Relay resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco NX-OS. This affects an unknown part of the component DHCPv4 Relay. This manipulation causes resource management. The identification of this vulnerability is CVE-2015-6393. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cisco NX-OS (Router Operating System) (affected version not known) and classified as critical. Affected by this vulnerability is some unknown functionality of the component DHCPv4 Relay. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.

The weakness was shared 10/05/2016 with Cisco as cisco-sa-20161005-dhcp2 / CSCuq39250 / CSCuq39250 / CSCus21733 / CSCus21739 / CSCus21739 / CSCut76171 / CSCut76171 / CSCux67182 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2015-6393 since 08/17/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 95257 (Cisco NX-OS DHCPv4 Crafted Packet DoS (cisco-sa-20161005-dhcp2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316055 (Cisco NX-OS Software Malformed DHCPv4 Packet Denial of Service Vulnerability (cisco-sa-20161005-dhcp2)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95257), SecurityFocus (BID 93419†) and SecurityTracker (ID 1036949†). The entries VDB-92478 and VDB-92477 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95257
Nessus Name: Cisco NX-OS DHCPv4 Crafted Packet DoS (cisco-sa-20161005-dhcp2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 855756
OpenVAS Name: Cisco NX-OS Software Malformed DHCPv4 Packet Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

08/17/2015 🔍
10/05/2016 +415 days 🔍
10/05/2016 +0 days 🔍
10/05/2016 +0 days 🔍
10/05/2016 +0 days 🔍
10/06/2016 +1 days 🔍
10/06/2016 +0 days 🔍
11/22/2016 +47 days 🔍
09/22/2022 +2130 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20161005-dhcp2 / CSCuq39250 / CSCuq39250 / CSCus21733 / CSCus21739 / CSCus21739 / CSCut76171 / CSCut76171 / CSCux67182
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-6393 (🔍)
GCVE (CVE): GCVE-0-2015-6393
GCVE (VulDB): GCVE-100-92479
SecurityFocus: 93419 - Multiple Cisco Nexus Devices CVE-2015-6393 Denial of Service Vulnerability
SecurityTracker: 1036949

See also: 🔍

Entryinfo

Created: 10/06/2016 21:35
Updated: 09/22/2022 14:57
Changes: 10/06/2016 21:35 (69), 05/04/2019 06:31 (12), 09/22/2022 14:57 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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