VDB-145223 · CVE-2019-18809 · GCVE-0-2019-18809

Linux Kernel up to 5.3.8 af9005.c af9005_identify_state resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.3.8. Affected by this issue is the function af9005_identify_state of the file drivers/media/usb/dvb-usb/af9005.c. The manipulation leads to resource consumption. This vulnerability is listed as CVE-2019-18809. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.3.8 (Operating System). It has been rated as problematic. This issue affects the function af9005_identify_state of the file drivers/media/usb/dvb-usb/af9005.c. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-2289adbfa559.

The weakness was presented 11/07/2019. The identification of this vulnerability is CVE-2019-18809 since 11/07/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 5.3.9 eliminates this vulnerability.

See VDB-145227, VDB-145226, VDB-145225 and VDB-145224 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.3.9
Patch: github.com

Timelineinfo

11/07/2019 🔍
11/07/2019 +0 days 🔍
11/08/2019 +1 days 🔍
02/05/2024 +1550 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 2289adbfa559050d2a38bcd9caac1c18b800e928
Status: Not defined

CVE: CVE-2019-18809 (🔍)
GCVE (CVE): GCVE-0-2019-18809
GCVE (VulDB): GCVE-100-145223
See also: 🔍

Entryinfo

Created: 11/08/2019 11:21
Updated: 02/05/2024 15:06
Changes: 11/08/2019 11:21 (40), 11/08/2019 11:26 (18), 02/05/2024 15:01 (6), 02/05/2024 15:06 (1)
Complete: 🔍
Cache ID: 216::103