Linux Kernel up to 4.12.8 mm/migrate.c move_pages information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.12.8. This issue affects the function move_pages of the file mm/migrate.c. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2017-14140. The attack needs to be performed locally. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.12.8 (Operating System). This issue affects the function move_pages of the file mm/migrate.c. 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. The summary by CVE is:

The move_pages system call in mm/migrate.c in the Linux kernel before 4.12.9 doesn't check the effective uid of the target process, enabling a local attacker to learn the memory layout of a setuid executable despite ASLR.

The bug was discovered 08/21/2017. The weakness was released 09/05/2017 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2017-14140 since 09/05/2017. An attack has to be approached locally. The successful exploitation needs a simple authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103363 (Debian DLA-1099-1 : linux security update (BlueBorne) (Stack Clash)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351447 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-013).

Upgrading to version 4.12.9 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 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103363) and SecurityFocus (BID 100876†). Entries connected to this vulnerability are available at VDB-102802, VDB-103034, VDB-104449 and VDB-104864. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 103363
Nessus Name: Debian DLA-1099-1 : linux security update (BlueBorne) (Stack Clash)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3981-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Upgrade: Kernel 4.12.9
Patch: git.kernel.org

Timelineinfo

08/21/2017 🔍
09/05/2017 +15 days 🔍
09/05/2017 +0 days 🔍
09/05/2017 +0 days 🔍
09/05/2017 +0 days 🔍
09/06/2017 +1 days 🔍
09/20/2017 +14 days 🔍
09/21/2017 +1 days 🔍
12/27/2022 +1923 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:0676
Researcher: Otto Ebeling
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-14140 (🔍)
GCVE (CVE): GCVE-0-2017-14140
GCVE (VulDB): GCVE-100-106121

OVAL: 🔍

SecurityFocus: 100876 - Linux Kernel 'mm/migrate.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 09/06/2017 08:53
Updated: 12/27/2022 18:03
Changes: 09/06/2017 08:53 (77), 11/13/2019 07:24 (11), 01/10/2021 16:56 (2), 12/27/2022 18:03 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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