Intel CPU MFBDS information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Intel CPU and classified as critical. This affects an unknown part of the component MFBDS. The manipulation results in information disclosure. This vulnerability is cataloged as CVE-2018-12130. The attack must be initiated from a local position. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Intel CPU (Chip Software) (the affected version is unknown). It has been classified as critical. Affected is an unknown code of the component MFBDS. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.

The bug was discovered 05/14/2019. The weakness was shared 05/14/2019 as INTEL-SA-00233 as confirmed security advisory (Website). The advisory is shared for download at intel.com. This vulnerability is traded as CVE-2018-12130 since 06/11/2018. The attack needs to be approached locally. A authentication is needed for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592. The advisory points out:

Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172312 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2019:1243-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (209571) and SecurityFocus (BID 108299†). The entries VDB-134856, VDB-134857, VDB-134858 and VDB-134859 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Intel): 6.5
Vendor Vector (Intel): 🔍

NVD Base Score: 5.6
NVD Vector: 🔍

ADP CISA Base Score: 5.9
ADP CISA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/11/2018 🔍
05/10/2019 +333 days 🔍
05/14/2019 +4 days 🔍
05/14/2019 +0 days 🔍
05/14/2019 +0 days 🔍
06/19/2019 +36 days 🔍
05/30/2026 +2537 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: INTEL-SA-00233
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-12130 (🔍)
GCVE (CVE): GCVE-0-2018-12130
GCVE (VulDB): GCVE-100-136644
SecurityFocus: 108299 - Linux Kernel 'net/bluetooth/hidp/sock.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 06/19/2019 14:18
Updated: 05/30/2026 04:38
Changes: 06/19/2019 14:18 (73), 06/25/2020 15:41 (5), 10/06/2023 11:18 (4), 10/26/2024 21:05 (16), 05/30/2026 04:38 (12)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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