IBM Power9 L1 Cache information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k0.00

A vulnerability was found in IBM Power9 (affected version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component L1 Cache Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. As an impact it is known to affect confidentiality. The summary by CVE is:

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.

The weakness was released 11/20/2020. It is possible to read the advisory at ibm.com. This vulnerability is known as CVE-2020-4788 since 12/30/2019. The exploitation appears to be easy. Attacking locally is a requirement. A single authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability is also documented in the vulnerability database at X-Force (189296).

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VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Information disclosure
CWE: CWE-200
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

12/30/2019 🔍
11/20/2020 +326 days 🔍
11/20/2020 +0 days 🔍
12/09/2020 +19 days 🔍

Sourcesinfoedit

Vendor: ibm.com

Advisory: ibm.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-4788 (🔍)
X-Force: 189296

Entryinfoedit

Created: 11/20/2020 08:24 AM
Updated: 12/09/2020 04:42 PM
Changes: (19) vulnerability_cvss2_nvd_basescore vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss3_nvd_basescore vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a source_cve_cna
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