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.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 4.15.4. The affected element is the function show_floppy of the file drivers/block/floppy.c of the component Floppy Driver. Such manipulation as part of Variable leads to information disclosure (KASLR). This vulnerability is documented as CVE-2018-7273. The attack needs to be performed locally. Additionally, an exploit exists. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.15.4 (Operating System). Affected by this issue is the function show_floppy of the file drivers/block/floppy.c of the component Floppy Driver. The manipulation as part of a Variable leads to a information disclosure vulnerability (KASLR). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.

The bug was discovered 02/20/2018. The weakness was released 02/21/2018 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2018-7273 since 02/20/2018. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the databases at Exploit-DB (44325) and SecurityFocus (BID 103088†). 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

• 4.15.0
• 4.15.1
• 4.15.2
• 4.15.3
• 4.15.4

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: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
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

Name: KASLR
Class: Information disclosure / KASLR
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/20/2018 🔍
02/20/2018 +0 days 🔍
02/20/2018 +0 days 🔍
02/20/2018 +0 days 🔍
02/21/2018 +1 days 🔍
02/21/2018 +0 days 🔍
12/07/2024 +2481 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2018-7273 (🔍)
GCVE (CVE): GCVE-0-2018-7273
GCVE (VulDB): GCVE-100-113636
SecurityFocus: 103088 - Linux Kernel 'drivers/block/floppy.c' Local Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/21/2018 08:04 AM
Updated: 12/07/2024 12:37 PM
Changes: 02/21/2018 08:04 AM (65), 01/07/2020 11:57 AM (6), 12/07/2024 12:37 PM (18)
Complete: 🔍
Cache ID: 244:FD7:40

Discussion

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