Arista Cloud EOS VM vEOS TCP MSS denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Arista Cloud EOS VM vEOS. Affected by this vulnerability is an unknown functionality of the component TCP MSS Handler. This manipulation causes denial of service. This vulnerability is registered as CVE-2020-11622. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Arista Cloud EOS VM vEOS (Cloud Software) (the affected version is unknown). Affected by this vulnerability is an unknown code of the component TCP MSS Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.

The weakness was published 06/10/2020 (Website). It is possible to read the advisory at arista.com. This vulnerability is known as CVE-2020-11622 since 04/07/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

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

NVD Base Score: 7.5
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: Denial of service
CWE: CWE-404
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

04/07/2020 🔍
06/10/2020 +64 days 🔍
06/11/2020 +1 days 🔍
10/23/2020 +134 days 🔍

Sourcesinfo

Advisory: arista.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-11622 (🔍)
GCVE (CVE): GCVE-0-2020-11622
GCVE (VulDB): GCVE-100-156475

Entryinfo

Created: 06/11/2020 09:51
Updated: 10/23/2020 19:33
Changes: 06/11/2020 09:51 (37), 06/11/2020 09:56 (17), 10/23/2020 19:33 (1)
Complete: 🔍
Cache ID: 216::103

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