Linux Kernel up to 4.15-rc3 Crypto Subsystem input validation

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CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.07

A vulnerability was found in Linux Kernel up to 4.15-rc3 (Operating System). It has been classified as critical. Affected is an unknown code of the component Crypto Subsystem. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-20. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 08/28/2018. The weakness was shared 08/30/2018 by Florian Weimer as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2018-14619 since 07/27/2018. Local access is required to approach this attack. A authentication is needed for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 118513 (RHEL 7 : kernel-alt (RHSA-2018:2948) (Spectre)), 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 local.

Upgrading to version 4.15-rc4 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 105200) and Tenable (118513). The entries 109193 and 124208 are related to this item.

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CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Privilege escalation (CWE-20)
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118513
Nessus Name: RHEL 7 : kernel-alt (RHSA-2018:2948) (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.15-rc4

Timelineinfoedit

07/27/2018 🔍
08/28/2018 +32 days 🔍
08/28/2018 +0 days 🔍
08/30/2018 +1 days 🔍
08/30/2018 +0 days 🔍
08/31/2018 +1 days 🔍
10/30/2018 +60 days 🔍
10/31/2018 +1 days 🔍
03/19/2020 +505 days 🔍

Sourcesinfoedit

Vendor: https://www.kernel.org/

Advisory: bugzilla.redhat.com
Researcher: Florian Weimer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-14619 (🔍)
SecurityFocus: 105200 - Linux Kernel CVE-2018-14619 Local Denial of Service Vulnerability

See also: 🔍

Entryinfoedit

Created: 08/31/2018 07:01 AM
Updated: 03/19/2020 03:16 PM
Changes: (6) vulnerability_discoverydate advisory_person_name advisory_confirm_url countermeasure_date source_securityfocus_date source_securityfocus_class
Complete: 🔍

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