VDB-147322 · CVE-2019-19814 · GCVE-0-2019-19814

Linux Kernel 5.0.21 f2fs Filesystem Image __remove_dirty_segment out-of-bounds write

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.
6.5	$5k-$25k	0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel 5.0.21. Affected is the function __remove_dirty_segment of the component f2fs Filesystem Image Handler. Executing a manipulation can lead to out-of-bounds write. This vulnerability is tracked as CVE-2019-19814. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel 5.0.21 (Operating System). This vulnerability affects the function __remove_dirty_segment of the component f2fs Filesystem Image Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause __remove_dirty_segment slab-out-of-bounds write access because an array is bounded by the number of dirty types (8) but the array index can exceed this.

The weakness was disclosed 12/17/2019. This vulnerability was named CVE-2019-19814 since 12/16/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/12/2024).

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

The entries VDB-147324, VDB-147323 and VDB-147321 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

5.0.21

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: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/16/2019 🔍
12/17/2019 +1 days 🔍
12/18/2019 +1 days 🔍
03/12/2024 +1546 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: github.com
Status: Not defined

CVE: CVE-2019-19814 (🔍)
GCVE (CVE): GCVE-0-2019-19814
GCVE (VulDB): GCVE-100-147322
See also: 🔍

Entryinfo

Created: 12/18/2019 08:15
Updated: 03/12/2024 16:06
Changes: 12/18/2019 08:15 (38), 12/18/2019 08:20 (18), 03/12/2024 16:06 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.