Linux Kernel up to 4.7 kernel/auditsc.c audit_log_single_execve_arg race condition

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.7. It has been rated as problematic. This vulnerability affects the function audit_log_single_execve_arg of the file kernel/auditsc.c. This manipulation causes race condition. This vulnerability appears as CVE-2016-6136. The attack requires local access. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.7 (Operating System) and classified as problematic. Affected by this vulnerability is the function audit_log_single_execve_arg of the file kernel/auditsc.c. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Race condition in the audit_log_single_execve_arg function in kernel/auditsc.c in the Linux kernel through 4.7 allows local users to bypass intended character-set restrictions or disrupt system-call auditing by changing a certain string, aka a "double fetch" vulnerability.

The weakness was presented 08/06/2016 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2016-6136 since 07/01/2016. Attacking locally is a requirement. The successful exploitation requires a single authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 101427 (Virtuozzo 6 : kernel / kernel-abi-whitelists / kernel-debug / etc (VZLSA-2017-0307)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157314 (Oracle Enterprise Linux Security Update for kernel (ELSA-2016-2574)-Deprecated).

Upgrading eliminates this vulnerability. A possible mitigation has been published 8 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101427) and SecurityFocus (BID 91558†). See VDB-82951, VDB-82953, VDB-82963 and VDB-82965 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 101427
Nessus Name: Virtuozzo 6 : kernel / kernel-abi-whitelists / kernel-debug / etc (VZLSA-2017-0307)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for kernel CESA-2017:0307 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

07/01/2016 🔍
07/04/2016 +3 days 🔍
08/06/2016 +33 days 🔍
08/06/2016 +0 days 🔍
08/08/2016 +2 days 🔍
02/24/2017 +200 days 🔍
07/13/2017 +139 days 🔍
09/13/2022 +1888 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 43761473c254b45883a64441dd0bc85a42f3645c⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6136 (🔍)
GCVE (CVE): GCVE-0-2016-6136
GCVE (VulDB): GCVE-100-90643

OVAL: 🔍

SecurityFocus: 91558 - Linux Kernel CVE-2016-6136 Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 08/08/2016 15:24
Updated: 09/13/2022 09:49
Changes: 08/08/2016 15:24 (56), 05/28/2019 00:32 (26), 09/13/2022 09:47 (5), 09/13/2022 09:49 (1)
Complete: 🔍
Cache ID: 216:EA9:103

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