Intel CPU Speculative Execution information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Intel CPU. It has been rated as critical. The impacted element is an unknown function of the component Speculative Execution. The manipulation leads to information disclosure. This vulnerability is referenced as CVE-2018-3693. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Intel CPU (Chip Software) (version unknown). This issue affects an unknown function 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, integrity, and availability. The summary by CVE is:

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.

The bug was discovered 07/10/2018. The weakness was published 07/10/2018 by Jann Horn with Google Project Zero (Website). The advisory is shared at 01.org. The identification of this vulnerability is CVE-2018-3693 since 12/28/2017. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 111727 (RHEL 7 : kernel (RHSA-2018:2384) (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 157805 (Oracle Enterprise Linux Security Update for kernel (ELSA-2018-2748)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111727) and SecurityFocus (BID 104232†). Similar entries are available at VDB-117820, VDB-118107, VDB-126166 and VDB-126196. 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: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.6
NVD 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: 111727
Nessus Name: RHEL 7 : kernel (RHSA-2018:2384) (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: 🔍
Exposure Time: 🔍

Timelineinfo

12/28/2017 🔍
05/21/2018 +144 days 🔍
07/10/2018 +49 days 🔍
07/10/2018 +0 days 🔍
07/10/2018 +0 days 🔍
07/11/2018 +1 days 🔍
08/14/2018 +34 days 🔍
08/15/2018 +1 days 🔍
04/06/2023 +1695 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: RHSA-2018:2384
Researcher: Jann Horn
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-3693 (🔍)
GCVE (CVE): GCVE-0-2018-3693
GCVE (VulDB): GCVE-100-121205
SecurityFocus: 104232 - Multiple CPU Hardware CVE-2018-3639 Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 07/11/2018 10:50
Updated: 04/06/2023 11:43
Changes: 07/11/2018 10:50 (73), 03/02/2020 11:51 (8), 04/06/2023 11:43 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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