VDB-181498 · CVE-2021-1588 · GCVE-0-2021-1588

Cisco NX-OS OAM buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$5k-$25k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco NX-OS. This impacts an unknown function of the component OAM. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2021-1588. The attack may be performed from remote. There is no available exploit. 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. This vulnerability affects some unknown functionality of the component OAM. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability.

The weakness was presented 08/26/2021 as cisco-sa-nxos-mpls-oam-dos-sGO9x5GM. The advisory is available at tools.cisco.com. This vulnerability was named CVE-2021-1588. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/26/2021).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Router Operating System

Vendor

Cisco

Name

NX-OS

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

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

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/13/2020 🔍
08/26/2021 +285 days 🔍
08/26/2021 +0 days 🔍
08/29/2021 +3 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-nxos-mpls-oam-dos-sGO9x5GM
Status: Confirmed

CVE: CVE-2021-1588 (🔍)
GCVE (CVE): GCVE-0-2021-1588
GCVE (VulDB): GCVE-100-181498

Entryinfo

Created: 08/26/2021 06:51
Updated: 08/29/2021 14:20
Changes: 08/26/2021 06:51 (38), 08/29/2021 14:19 (2), 08/29/2021 14:20 (1)
Complete: 🔍
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