Linux Kernel up to 4.10.6 fs/crypto/ use after free

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CVSS Meta Temp Score
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6.3$0-$5k0.00

A vulnerability, which was classified as critical, was found in Linux Kernel up to 4.10.6 (Operating System). This affects some unknown processing of the file fs/crypto/. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-416. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 03/31/2017. The weakness was disclosed 03/31/2017 as confirmed git commit (GIT Repository). It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2017-7374 since 03/31/2017. Attacking locally is a requirement. Required for exploitation is a authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 99657 (Ubuntu 16.04 LTS : linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities (USN-3265-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196761 (Ubuntu Security Notification for Linux, Linux-aws, Linux-gke, Linux-raspi2, Linux-snapdragon Vulnerabilities (USN-3265-1)).

Upgrading to version 4.10.7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 97308) and Tenable (99657).

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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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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-416
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99657
Nessus Name: Ubuntu 16.04 LTS : linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities (USN-3265-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for the openSUSE-SU-2017:1140-1 (the)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

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

Upgrade: Kernel 4.10.7
Patch: git.kernel.org

Timelineinfoedit

03/31/2017 🔍
03/31/2017 +0 days 🔍
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03/31/2017 +0 days 🔍
03/31/2017 +0 days 🔍
04/01/2017 +1 days 🔍
04/01/2017 +0 days 🔍
04/24/2017 +22 days 🔍
04/25/2017 +1 days 🔍

Sourcesinfoedit

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

Advisory: git.kernel.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7374 (🔍)
SecurityFocus: 97308 - Linux Kernel CVE-2017-7374 Local Denial of Service Vulnerability
OSVDB: - CVE-2017-7374 - Linux - Use-After-Free Issue

Entryinfoedit

Created: 04/01/2017 10:03 AM
Changes: (85) software_type software_vendor software_name software_version software_file vulnerability_discoverydate vulnerability_cwe vulnerability_risk vulnerability_historic vulnerability_cvss2_vuldb_basescore vulnerability_cvss2_vuldb_tempscore vulnerability_cvss2_vuldb_av vulnerability_cvss2_vuldb_ac vulnerability_cvss2_vuldb_au vulnerability_cvss2_vuldb_ci vulnerability_cvss2_vuldb_ii vulnerability_cvss2_vuldb_ai vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss3_vuldb_basescore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_vuldb_av vulnerability_cvss3_vuldb_ac vulnerability_cvss3_vuldb_pr vulnerability_cvss3_vuldb_ui vulnerability_cvss3_vuldb_s vulnerability_cvss3_vuldb_c vulnerability_cvss3_vuldb_i vulnerability_cvss3_vuldb_a vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a advisory_date advisory_location advisory_type advisory_url advisory_confirm_url exploit_price_0day countermeasure_name countermeasure_date countermeasure_upgrade_version countermeasure_patch_url source_cve source_cve_assigned source_cve_nvd_published source_cve_nvd_summary source_osvdb_title source_securityfocus source_securityfocus_date source_securityfocus_class source_securityfocus_title source_nessus_id source_nessus_name source_nessus_filename source_nessus_risk source_nessus_family source_nessus_type source_nessus_date source_openvas_id source_openvas_filename source_openvas_title source_openvas_family source_qualys_id source_qualys_title customer_argus vulnerability_cvss2_vuldb_e vulnerability_cvss2_vuldb_rl vulnerability_cvss2_vuldb_rc vulnerability_cvss3_vuldb_e vulnerability_cvss3_vuldb_rl vulnerability_cvss3_vuldb_rc advisory_reaction_days countermeasure_exposure_days vulnerability_cvss3_nvd_basescore
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