Cisco FXOS/NX-OS Fabric Services memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco FXOS and NX-OS. It has been declared as critical. This affects an unknown part of the component Fabric Services. The manipulation results in memory corruption. This vulnerability was named CVE-2018-0304. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco FXOS and NX-OS (Router Operating System) (version now known). Affected is some unknown processing of the component Fabric Services. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to read sensitive memory content, create a denial of service (DoS) condition, or execute arbitrary code as root. The vulnerability exists because the affected software insufficiently validates Cisco Fabric Services packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow or buffer overread condition in the Cisco Fabric Services component, which could allow the attacker to read sensitive memory content, create a DoS condition, or execute arbitrary code as root. This vulnerability affects the following if configured to use Cisco Fabric Services: Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd69951, CSCve02459, CSCve02461, CSCve02463, CSCve02474, CSCve04859.

The bug was discovered 06/20/2018. The weakness was presented 06/20/2018 with Cisco as cisco-sa-20180620-fxnxos-ace / CSCve04859 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2018-0304 since 11/27/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/28/2023).

The vulnerability scanner Nessus provides a plugin with the ID 110687 (Cisco NX-OS Cisco Fabric Services Multiple Vulnerabilities.), 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 c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316283 (Cisco NX-OS Software Cisco Fabric Services Arbitrary Code Execution Vulnerability(cisco-sa-20180620-fxnxos-ace)).

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 (110687) and SecurityFocus (BID 104513†). See VDB-119750, VDB-119751, VDB-119752 and VDB-119769 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: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 110687
Nessus Name: Cisco NX-OS Cisco Fabric Services Multiple Vulnerabilities.
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/27/2017 🔍
06/20/2018 +204 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/21/2018 +1 days 🔍
06/25/2018 +4 days 🔍
03/28/2023 +1737 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180620-fxnxos-ace / CSCve04859
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0304 (🔍)
GCVE (CVE): GCVE-0-2018-0304
GCVE (VulDB): GCVE-100-119748
SecurityFocus: 104513 - Cisco FXOS and NX-OS Software CVE-2018-0304 Arbitrary Code Execution Vulnerability
SecurityTracker: 1041169

See also: 🔍

Entryinfo

Created: 06/21/2018 08:27
Updated: 03/28/2023 10:50
Changes: 06/21/2018 08:27 (69), 02/20/2020 20:00 (7), 03/28/2023 10:50 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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