Cisco NX-OS on Nexus 7000 Virtual Device Context null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cisco NX-OS on Nexus 7000. This impacts an unknown function of the component Virtual Device Context. The manipulation results in null pointer dereference. This vulnerability was named CVE-2014-1191. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco NX-OS on Nexus 7000 (Router Operating System) (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component Virtual Device Context. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 05/21/2014 as cisco-sa-20140521-nxos / CSCud88400 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2014-1191. The exploitability is told to be difficult. It is possible to launch the attack remotely. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available. The advisory points out:

Cisco NX-OS-Based devices contain a privilege escalation vulnerability when multiple virtual device contexts (VDCs) exist on the system and local authentication has been configured. A remote, authenticated attacker who can access the SSH management interfaces of an affected device could manipulate the login information supplied as part of the SSH key file to exploit the vulnerability. This could allow the attacker to obtain the privileges of an administrator in another VDC. Under certain conditions, this may allow the attacker to take complete control of the affected device.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at software.cisco.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93311), SecurityFocus (BID 67574†) and SecurityTracker (ID 1030268†). Further details are available at tools.cisco.com. See VDB-13310, VDB-13309, VDB-13307 and VDB-69801 for similar entries. Once again VulDB remains the best 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: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: software.cisco.com

Timelineinfo

05/21/2014 🔍
05/21/2014 +0 days 🔍
05/21/2014 +0 days 🔍
05/21/2014 +0 days 🔍
05/22/2014 +1 days 🔍
07/15/2019 +1879 days 🔍
06/20/2021 +706 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20140521-nxos / CSCud88400
Status: Confirmed

CVE: CVE-2014-1191 (🔍)
GCVE (CVE): GCVE-0-2014-1191
GCVE (VulDB): GCVE-100-13308
X-Force: 93311 - Cisco NX-OS SSH key privilege escalation, High Risk
SecurityFocus: 67574 - Cisco NX-OS Virtual Device Context SSH Key CVE-2013-1191 Remote Privilege Escalation Vulnerability
SecurityTracker: 1030268

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 05/22/2014 22:53
Updated: 06/20/2021 10:02
Changes: 05/22/2014 22:53 (48), 04/02/2019 14:20 (11), 06/20/2021 10:02 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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