Linux Kernel up to 4.17.6 yurex USB Driver drivers/usb/misc/yurex.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 4.17.6. This affects an unknown function of the file drivers/usb/misc/yurex.c of the component yurex USB Driver. The manipulation leads to input validation. This vulnerability is documented as CVE-2018-16276. The attack needs to be performed locally. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.17.6 (Operating System). It has been rated as critical. This issue affects some unknown functionality of the file drivers/usb/misc/yurex.c of the component yurex USB Driver. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in yurex_read in drivers/usb/misc/yurex.c in the Linux kernel before 4.17.7. Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges.

The bug was discovered 07/06/2018. The weakness was released 08/31/2018 (Website). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2018-16276 since 08/31/2018. An attack has to be approached locally. A simple authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 56 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117862 (Debian DSA-4308-1 : linux - security update), 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 171601 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:2879-1)).

Upgrading to version 4.17.7 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117862) and SecurityFocus (BID 103348†). Entries connected to this vulnerability are available at VDB-114233, VDB-120205, VDB-120206 and VDB-122243. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
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: Input validation
CWE: CWE-20
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: 117862
Nessus Name: Debian DSA-4308-1 : linux - security update
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 4.17.7
Patch: git.kernel.org

Timelineinfo

03/08/2018 🔍
07/06/2018 +120 days 🔍
08/31/2018 +55 days 🔍
08/31/2018 +0 days 🔍
08/31/2018 +0 days 🔍
09/01/2018 +1 days 🔍
10/01/2018 +30 days 🔍
10/02/2018 +1 days 🔍
05/06/2023 +1677 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: f1e255d60ae66a9f672ff9a207ee6cd8e33d2679
Status: Confirmed

CVE: CVE-2018-16276 (🔍)
GCVE (CVE): GCVE-0-2018-16276
GCVE (VulDB): GCVE-100-123461

OVAL: 🔍

SecurityFocus: 103348 - Linux Kernel 'drivers/scsi/libsas/sas_expander.c' Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/01/2018 08:19
Updated: 05/06/2023 13:17
Changes: 09/01/2018 08:19 (80), 03/19/2020 20:10 (4), 05/06/2023 13:12 (5), 05/06/2023 13:17 (1)
Complete: 🔍
Cache ID: 216:8DB:103

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