Linux Kernel up to 4.15.11 fs/ncpfs/ncplib_kernel.c ncp_read_kernel memory corruption

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.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 4.15.11. This affects the function ncp_read_kernel in the library fs/ncpfs/ncplib_kernel.c. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2018-8822. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.15.11 (Operating System). It has been classified as problematic. This affects the function ncp_read_kernel in the library fs/ncpfs/ncplib_kernel.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through 4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.

The bug was discovered 03/19/2018. The weakness was disclosed 03/20/2018 (Website). The advisory is shared at mail-archive.com. This vulnerability is uniquely identified as CVE-2018-8822 since 03/20/2018. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109758 (SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1221-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171042 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:1048-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109758), SecurityFocus (BID 103476†) and CERT Bund (WID-SEC-2022-0532). The entries VDB-109544, VDB-111669, VDB-113900 and VDB-114233 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Oracle Linux
• Debian Linux
• Open Source Linux Kernel
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle VM
• NetApp FAS
• Avaya Aura Communication Manager
• Avaya Aura Session Manager
• Avaya Aura Application Enablement Services
• Avaya Aura System Manager
• Avaya Aura Experience Portal
• NetApp AFF

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.15.0
• 4.15.1
• 4.15.2
• 4.15.3
• 4.15.4
• 4.15.5
• 4.15.6
• 4.15.7
• 4.15.8
• 4.15.9
• 4.15.10
• 4.15.11

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: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 109758
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1221-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58191
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1369-1] linux security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

03/19/2018 🔍
03/20/2018 +1 days 🔍
03/20/2018 +0 days 🔍
03/20/2018 +0 days 🔍
03/21/2018 +1 days 🔍
03/22/2018 +1 days 🔍
05/11/2018 +50 days 🔍
05/14/2018 +3 days 🔍
09/14/2025 +2680 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3653-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-8822 (🔍)
GCVE (CVE): GCVE-0-2018-8822
GCVE (VulDB): GCVE-100-114837

OVAL: 🔍

SecurityFocus: 103476 - Linux Kernel CVE-2018-8822 Multiple Memory Corruption Vulnerabilities
CERT Bund: WID-SEC-2022-0532 - Linux Kernel: Mehrere Schwachstellen

See also: 🔍

Entryinfo

Created: 03/21/2018 09:15
Updated: 09/14/2025 06:07
Changes: 03/21/2018 09:15 (79), 01/15/2020 11:36 (6), 02/22/2023 14:08 (4), 09/14/2025 06:07 (23)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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