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.
4.3	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 4.12 (Operating System). It has been rated as problematic. Affected by this issue is some unknown functionality of the file fs/f2fs/extent_cache.c of the component Linux Kernel. The manipulation as part of a Application leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users to cause a denial of service (BUG) via an application with multiple threads.

The bug was discovered 02/22/2018. The weakness was released 02/22/2018 (Website). The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2017-18193 since 02/22/2018. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 109518 (Debian DSA-4188-1 : linux - security update (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351263 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-002).

Upgrading to version 4.13 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109518) and SecurityFocus (BID 103147†). Entries connected to this vulnerability are available at VDB-104315, VDB-110784, VDB-111185 and VDB-112680.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

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

NVD Base Score: 5.5
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: 🔍

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: 109518
Nessus Name: Debian DSA-4188-1 : linux - security update (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54612
OpenVAS Name: Debian Security Advisory DSA 4188-1 (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: 🔍

Upgrade: Kernel 4.13
Patch: git.kernel.org

Timelineinfo

02/22/2018 🔍
02/22/2018 +0 days 🔍
02/22/2018 +0 days 🔍
02/22/2018 +0 days 🔍
02/23/2018 +1 days 🔍
02/26/2018 +3 days 🔍
05/01/2018 +64 days 🔍
05/02/2018 +1 days 🔍
02/08/2023 +1743 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: dad48e73127ba10279ea33e6dbc8d3905c4d31c0
Status: Not defined

CVE: CVE-2017-18193 (🔍)
OVAL: 🔍

SecurityFocus: 103147 - Linux Kernel 'fs/f2fs/extent_cache.c' Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/23/2018 07:47 AM
Updated: 02/08/2023 05:13 PM
Changes: 02/23/2018 07:47 AM (79), 01/07/2020 07:31 PM (4), 02/08/2023 05:05 PM (5), 02/08/2023 05:13 PM (1)
Complete: 🔍
Cache ID: 18:9DA:40

Discussion

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