Linux Kernel 4.14.90 debugfs File hidma_dbg.c hidma_chan_stats information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 4.14.90. It has been classified as problematic. This impacts the function hidma_chan_stats of the file drivers/dma/qcom/hidma_dbg.c of the component debugfs File Handler. The manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2018-20449. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 4.14.90 (Operating System). This issue affects the function hidma_chan_stats of the file drivers/dma/qcom/hidma_dbg.c of the component debugfs File Handler. 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 hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading "callback=" lines in a debugfs file.

The weakness was disclosed 04/04/2019 (Website). The advisory is shared at elixir.bootlin.com. The identification of this vulnerability is CVE-2018-20449 since 12/25/2018. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

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

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2018 🔍
04/04/2019 +100 days 🔍
04/05/2019 +1 days 🔍
05/25/2020 +416 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: elixir.bootlin.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-20449 (🔍)
GCVE (CVE): GCVE-0-2018-20449
GCVE (VulDB): GCVE-100-132977

Entryinfo

Created: 04/05/2019 07:07
Updated: 05/25/2020 17:06
Changes: 04/05/2019 07:07 (58), 05/25/2020 17:06 (1)
Complete: 🔍
Cache ID: 216::103

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