Linux Kernel up to 4.9.3 hid-cypress.c cp_report_fixup integer underflow

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 4.9.3. This impacts the function cp_report_fixup of the file drivers/hid/hid-cypress.c. Performing a manipulation results in integer underflow. This vulnerability is cataloged as CVE-2017-7273. The attack may be carried out on the physical device. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 4.9.3 (Operating System). This affects the function cp_report_fixup of the file drivers/hid/hid-cypress.c. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on availability. The summary by CVE is:

The cp_report_fixup function in drivers/hid/hid-cypress.c in the Linux kernel 4.x before 4.9.4 allows physically proximate attackers to cause a denial of service (integer underflow) or possibly have unspecified other impact via a crafted HID report.

The bug was discovered 03/27/2017. The weakness was shared 03/27/2017 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2017-7273 since 03/27/2017. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 99641 (F5 Networks BIG-IP : Linux kernel vulnerability (K22012502)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171709 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:3746-1)).

Upgrading to version 4.9.4 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 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99641) and SecurityFocus (BID 97190†). The entries VDB-109136, VDB-110475, VDB-124429 and VDB-125737 are related to this item. 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: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 2.1
VulDB Temp Score: 2.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.6
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99641
Nessus Name: F5 Networks BIG-IP : Linux kernel vulnerability (K22012502)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux-hwe USN-3361-1
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 4.9.4
Patch: git.kernel.org

Timelineinfo

03/27/2017 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
04/24/2017 +27 days 🔍
04/25/2017 +1 days 🔍
11/22/2022 +2037 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: K22012502
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7273 (🔍)
GCVE (CVE): GCVE-0-2017-7273
GCVE (VulDB): GCVE-100-99009
SecurityFocus: 97190 - Linux Kernel CVE-2017-7273 Local Denial of Service Vulnerability
OSVDB: - CVE-2017-7273 - Linux - Integer Overflow Issue

See also: 🔍

Entryinfo

Created: 03/28/2017 22:31
Updated: 11/22/2022 19:55
Changes: 03/28/2017 22:31 (80), 08/23/2020 14:56 (6), 11/22/2022 19:48 (3), 11/22/2022 19:55 (1)
Complete: 🔍
Cache ID: 216:1C9:103

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