Linux Kernel up to 4.12.8 mm/mempolicy.c do_get_mempolicy System Calls use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 4.12.8. Affected by this vulnerability is the function do_get_mempolicy of the file mm/mempolicy.c. Performing a manipulation as part of System Calls results in use after free. This vulnerability is known as CVE-2018-10675. Attacking locally is a requirement. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 4.12.8 (Operating System). This affects the function do_get_mempolicy of the file mm/mempolicy.c. The manipulation as part of a System Calls leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The do_get_mempolicy function in mm/mempolicy.c in the Linux kernel before 4.12.9 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system calls.

The bug was discovered 08/18/2017. The weakness was published 05/02/2018 (Website). It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2018-10675 since 05/02/2018. Attacking locally is a requirement. A authentication is required for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 257 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111077 (CentOS 6 : kernel (CESA-2018:2164) (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 237056 (Red Hat Update for kernel (RHSA-2018:3540)).

Upgrading to version 4.12.9 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 Tenable (111077) and SecurityFocus (BID 104093†). Similar entries are available at VDB-110197, VDB-110288, VDB-110317 and VDB-111303. 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: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 111077
Nessus Name: CentOS 6 : kernel (CESA-2018:2164) (Spectre)
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: 🔍

Upgrade: Kernel 4.12.9
Patch: git.kernel.org

Timelineinfo

08/18/2017 🔍
05/02/2018 +256 days 🔍
05/02/2018 +0 days 🔍
05/02/2018 +0 days 🔍
05/02/2018 +0 days 🔍
05/03/2018 +1 days 🔍
07/13/2018 +71 days 🔍
07/16/2018 +3 days 🔍
03/08/2023 +1696 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:2164
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10675 (🔍)
GCVE (CVE): GCVE-0-2018-10675
GCVE (VulDB): GCVE-100-117315
SecurityFocus: 104093 - Linux Kernel 'mm/mempolicy.c' Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 05/03/2018 08:35
Updated: 03/08/2023 14:35
Changes: 05/03/2018 08:35 (80), 02/02/2020 08:53 (5), 03/08/2023 14:35 (5)
Complete: 🔍
Cache ID: 216::103

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