VDB-134460 · CVE-2019-11810 · RHSA-2019:1959

Linux Kernel up to 5.0.6 megaraid_sas_base.c megasas_create_frame_pool null pointer dereference

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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.0.6 and classified as problematic. The impacted element is the function megasas_create_frame_pool of the file drivers/scsi/megaraid/megaraid_sas_base.c. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2019-11810. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.0.6 (Operating System). Affected is the function megasas_create_frame_pool of the file drivers/scsi/megaraid/megaraid_sas_base.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c. This causes a Denial of Service, related to a use-after-free.

The bug was discovered 02/15/2019. The weakness was published 05/07/2019 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2019-11810 since 05/07/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 81 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197486 (Ubuntu Security Notification for Linux, Linux-aws, Linux-kvm, Linux-raspi2, Linux-snapdragon Vulnerabilities (USN-4008-1)).

Upgrading to version 5.0.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105388†). Similar entries are available at VDB-124429, VDB-127125, VDB-133369 and VDB-133370. Once again VulDB remains the best 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: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.0.7
Patch: git.kernel.org

Timelineinfo

09/24/2018 🔍
02/15/2019 +144 days 🔍
05/07/2019 +81 days 🔍
05/07/2019 +0 days 🔍
05/08/2019 +1 days 🔍
09/12/2023 +1588 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2019:1959⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-11810 (🔍)
GCVE (CVE): GCVE-0-2019-11810
GCVE (VulDB): GCVE-100-134460
SecurityFocus: 105388 - Linux Kernel 'chap_server_compute_md5()' Function Stack Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 05/08/2019 07:29
Updated: 09/12/2023 21:41
Changes: 05/08/2019 07:29 (64), 06/07/2020 17:29 (5), 09/12/2023 21:41 (5)
Complete: 🔍
Cache ID: 216::103