Intel CPU MSBDS 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, which was classified as critical, was found in Intel CPU. Affected by this vulnerability is an unknown functionality of the component MSBDS. Executing a manipulation can lead to information disclosure. This vulnerability is tracked as CVE-2018-12126. The attack is restricted to local execution. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Intel CPU (Chip Software) (affected version not known) and classified as critical. This vulnerability affects some unknown functionality of the component MSBDS. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The bug was discovered 05/14/2019. The weakness was disclosed 05/14/2019 as INTEL-SA-00233 as confirmed security advisory (Website). The advisory is available at intel.com. This vulnerability was named CVE-2018-12126 since 06/11/2018. Local access is required to approach this attack. A single authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. The advisory points out:

Microarchitectural Store Buffer Data Sampling (MSBDS): Store 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 pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.6
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-2018-12126 (🔍)
GCVE (CVE): GCVE-0-2018-12126
GCVE (VulDB): GCVE-100-136642
SecurityFocus: 108299 - Linux Kernel 'net/bluetooth/hidp/sock.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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