FreeBSD up to 11.3/12.1 epair Virtual Network input validation

CVSS Meta Temp Score
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD up to 11.3/12.1. It has been declared as critical. This affects an unknown part of the component epair Virtual Network Module. Executing a manipulation can lead to input validation. This vulnerability is tracked as CVE-2020-7452. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability has been found in FreeBSD up to 11.3/12.1 (Operating System) and classified as critical. This vulnerability affects some unknown processing of the component epair Virtual Network Module. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.

The weakness was disclosed 04/29/2020 (Website). The advisory is shared for download at security.FreeBSD.org. This vulnerability was named CVE-2020-7452 since 01/21/2020. The attack can be initiated remotely. Required for exploitation is a single authentication. There are neither technical details nor an exploit publicly available.

Applying a patch is able to eliminate this problem.

The entries VDB-154548 and VDB-154553 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.1
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
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: Input validation
CWE: CWE-20
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: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/21/2020 🔍
04/29/2020 +99 days 🔍
04/29/2020 +0 days 🔍
10/14/2020 +168 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.FreeBSD.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-7452 (🔍)
GCVE (CVE): GCVE-0-2020-7452
GCVE (VulDB): GCVE-100-154552
See also: 🔍

Entryinfo

Created: 04/29/2020 08:32
Updated: 10/14/2020 07:19
Changes: 04/29/2020 08:32 (38), 04/29/2020 09:07 (18), 10/14/2020 07:19 (1)
Complete: 🔍
Cache ID: 216::103

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