Intel CPU Speculative Execution information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Intel CPU and classified as critical. The affected element is an unknown function of the component Speculative Execution. The manipulation leads to information disclosure. This vulnerability is traded as CVE-2018-3620. An attack has to be approached locally. There is no exploit available. This vulnerability is historically significant due to its background and the way it was received. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Intel CPU (Chip Software) (the affected version unknown) and classified as problematic. This issue affects an unknown part of the component Speculative Execution. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.

The bug was discovered 08/14/2018. The weakness was shared 08/14/2018 with University of Michigan (Website). The advisory is shared at support.lenovo.com. The identification of this vulnerability is CVE-2018-3620 since 12/27/2017. An attack has to be approached locally. A simple authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/30/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue. Due to its background and reception, this vulnerability has a historic impact.

The vulnerability scanner Nessus provides a plugin with the ID 112026 (RHEL 7 : Virtualization (RHSA-2018:2402) (Foreshadow)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 390158 (Oracle VM Server for x86 Security Update for xen (OVMSA-2018-0272)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (112026) and SecurityFocus (BID 105080†). The entries VDB-113918, VDB-113919, VDB-117441 and VDB-117508 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

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

NVD Base Score: 5.6
NVD Vector: 🔍

ADP CISA Base Score: 5.6
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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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: 112026
Nessus Name: RHEL 7 : Virtualization (RHSA-2018:2402) (Foreshadow)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/27/2017 🔍
08/14/2018 +229 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +1 days 🔍
08/16/2018 +1 days 🔍
08/21/2018 +5 days 🔍
05/30/2026 +2839 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: RHSA-2018:2402
Organization: University of Michigan
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-3620 (🔍)
GCVE (CVE): GCVE-0-2018-3620
GCVE (VulDB): GCVE-100-122909

OVAL: 🔍

CERT: 🔍
SecurityFocus: 105080 - Multiple Intel Processors Side Channel Attack Multiple Information Disclosure Vulnerabilities
SecurityTracker: 1041451

See also: 🔍

Entryinfo

Created: 08/15/2018 06:39
Updated: 05/30/2026 04:19
Changes: 08/15/2018 06:39 (75), 03/15/2020 19:17 (7), 05/02/2023 09:09 (5), 05/02/2023 09:11 (1), 01/29/2025 16:52 (16), 05/30/2026 04:19 (12)
Complete: 🔍
Cache ID: 216::103

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