VDB-130352 · CVE-2017-18360 · BID 106802

Linux Kernel up to 4.11.2 io_ti.c change_port_settings divide by zero

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 4.11.2. This affects the function change_port_settings of the file drivers/usb/serial/io_ti.c. Such manipulation leads to divide by zero. This vulnerability is uniquely identified as CVE-2017-18360. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.11.2 (Operating System) and classified as problematic. Affected by this issue is the function change_port_settings of the file drivers/usb/serial/io_ti.c. The manipulation with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is availability. CVE summarizes:

In change_port_settings in drivers/usb/serial/io_ti.c in the Linux kernel before 4.11.3, local users could cause a denial of service by division-by-zero in the serial device layer by trying to set very high baud rates.

The bug was discovered 05/15/2017. The weakness was disclosed 01/31/2019 (Website). The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2017-18360 since 01/31/2019. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 626 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172154 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2019:13979-1)).

Upgrading to version 4.11.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106802†). The entry VDB-130385 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.11.3
Patch: git.kernel.org

Timelineinfo

05/15/2017 🔍
01/31/2019 +626 days 🔍
01/31/2019 +0 days 🔍
01/31/2019 +0 days 🔍
01/31/2019 +0 days 🔍
02/01/2019 +1 days 🔍
07/04/2023 +1614 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 6aeb75e6adfaed16e58780309613a578fe1ee90b
Status: Confirmed

CVE: CVE-2017-18360 (🔍)
GCVE (CVE): GCVE-0-2017-18360
GCVE (VulDB): GCVE-100-130352
SecurityFocus: 106802 - Linux kernel CVE-2017-18360 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/01/2019 07:53
Updated: 07/04/2023 09:33
Changes: 02/01/2019 07:53 (66), 05/07/2020 08:21 (3), 07/04/2023 09:29 (5), 07/04/2023 09:33 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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