AMD 3rd Gen EPYC Processors/4th Gen EPYC Processors arious SNP Guest Context Page use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD 3rd Gen EPYC Processors and 4th Gen EPYC Processors arious. It has been rated as critical. This vulnerability affects unknown code of the component SNP Guest Context Page Handler. Performing a manipulation results in use after free. This vulnerability is cataloged as CVE-2023-20519. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in AMD 3rd Gen EPYC Processors and 4th Gen EPYC Processors arious. This affects an unknown function of the component SNP Guest Context Page Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to masquerade as the guest's migration agent resulting in a potential loss of guest integrity.

The weakness was shared 11/14/2023. It is possible to read the advisory at amd.com. This vulnerability is uniquely identified as CVE-2023-20519 since 10/27/2022. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
11/14/2023 +383 days 🔍
11/14/2023 +0 days 🔍
12/09/2023 +25 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2023-20519 (🔍)
GCVE (CVE): GCVE-0-2023-20519
GCVE (VulDB): GCVE-100-245259

Entryinfo

Created: 11/14/2023 20:08
Updated: 12/09/2023 09:25
Changes: 11/14/2023 20:08 (37), 12/09/2023 09:25 (11)
Complete: 🔍
Cache ID: 216::103

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

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