VDB-131568 · CVE-2019-1617 · BID 107336

Cisco NX-OS Fibre Channel over Ethernet Packet dynamically-managed code resources

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Cisco NX-OS. This affects an unknown function of the component Fibre Channel over Ethernet. The manipulation as part of Packet results in dynamically-managed code resources. This vulnerability was named CVE-2019-1617. The attack needs to be approached within the local network. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco NX-OS (Router Operating System) (the affected version unknown). It has been classified as problematic. Affected is an unknown part of the component Fibre Channel over Ethernet. The manipulation as part of a Packet leads to a dynamically-managed code resources vulnerability. CWE is classifying the issue as CWE-913. The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements. This is going to have an impact on availability. CVE summarizes:

A vulnerability in the Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to an incorrect processing of FCoE packets when the fcoe-npv feature is uninstalled. An attacker could exploit this vulnerability by sending a stream of FCoE frames from an adjacent host to an affected device. An exploit could allow the attacker to cause packet amplification to occur, resulting in the saturation of interfaces and a DoS condition. Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I7(5) and 9.2(2).

The bug was discovered 03/06/2019. The weakness was presented 03/11/2019 as cisco-sa-20190306-nxos-npv-dos as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2019-1617 since 12/06/2018. The attack needs to be done within the local network. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

See VDB-131569, VDB-131567, VDB-131566 and VDB-131565 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Dynamically-managed code resources
CWE: CWE-913
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/06/2018 🔍
03/06/2019 +90 days 🔍
03/11/2019 +5 days 🔍
03/12/2019 +1 days 🔍
07/31/2023 +1602 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190306-nxos-npv-dos
Status: Confirmed

CVE: CVE-2019-1617 (🔍)
GCVE (CVE): GCVE-0-2019-1617
GCVE (VulDB): GCVE-100-131568
SecurityFocus: 107336

See also: 🔍

Entryinfo

Created: 03/12/2019 07:13
Updated: 07/31/2023 13:53
Changes: 03/12/2019 07:13 (60), 05/15/2020 14:25 (1), 07/31/2023 13:47 (4), 07/31/2023 13:53 (12)
Complete: 🔍
Cache ID: 216::103

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