Cisco IOS XE Easy Virtual Switching System memory corruption

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 (≈)
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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.
8.5$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco IOS XE. This affects an unknown function of the component Easy Virtual Switching System. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2021-1451. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS XE (Router Operating System) (affected version unknown). It has been declared as critical. This vulnerability affects an unknown functionality of the component Easy Virtual Switching System. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 03/25/2021 as cisco-sa-ios-xe-evss-code-exe-8cw5VSvw. The advisory is available at tools.cisco.com. This vulnerability was named CVE-2021-1451. 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 04/05/2021).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.7

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/13/2020 🔍
03/25/2021 +132 days 🔍
03/25/2021 +0 days 🔍
04/05/2021 +10 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-ios-xe-evss-code-exe-8cw5VSvw
Status: Confirmed

CVE: CVE-2021-1451 (🔍)
GCVE (CVE): GCVE-0-2021-1451
GCVE (VulDB): GCVE-100-171718
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 03/25/2021 09:44
Updated: 04/05/2021 01:17
Changes: 03/25/2021 09:44 (38), 04/05/2021 01:14 (5), 04/05/2021 01:17 (19)
Complete: 🔍
Cache ID: 216::103

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