VDB-112694 · CVE-2018-6412 · BID 104460

Linux Kernel up to 4.15 sbuslib.c sbusfb_ioctl_helper information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$5k-$25k0.02

A vulnerability was found in Linux Kernel up to 4.15 (Operating System) and classified as problematic. Affected by this issue is the function sbusfb_ioctl_helper in the library drivers/video/fbdev/sbuslib.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. CVE summarizes:

In the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel through 4.15, an integer signedness error allows arbitrary information leakage for the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands.

The bug was discovered 01/30/2018. The weakness was shared 01/31/2018 by Colin Percival with Amazon (Website). The advisory is available at marc.info. This vulnerability is handled as CVE-2018-6412 since 01/30/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 02/03/2023). This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351331 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-007 (SegmentSmack/FragmentSmack)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries 114489, 115491, 115502 and 115793 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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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
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

01/30/2018 🔍
01/30/2018 +0 days 🔍
01/31/2018 +1 days 🔍
01/31/2018 +0 days 🔍
02/01/2018 +1 days 🔍
06/13/2018 +132 days 🔍
02/03/2023 +1696 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 250c6c49e3b68756b14983c076183568636e2bde
Researcher: Colin Percival
Organization: Amazon
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6412 (🔍)
SecurityFocus: 104460 - Intel Core Microprocessors CVE-2018-3665 Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 02/01/2018 07:59
Updated: 02/03/2023 11:22
Changes: 02/01/2018 07:59 (65), 12/31/2019 17:04 (6), 02/03/2023 11:22 (4)
Complete: 🔍

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