VDB-128018 · CVE-2018-14853 · GCVE-0-2018-14853

Samsung Galaxy S6 SM-G920F G920FXXU5EQH7 Wi-Fi Driver dhd_msgbuf.c dhd_prot_txdata_write_flush 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.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Samsung Galaxy S6 SM-G920F G920FXXU5EQH7. Affected by this vulnerability is the function dhd_prot_txdata_write_flush of the file drivers/net/wireless/bcmdhd4358/dhd_msgbuf.c of the component Wi-Fi Driver. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2018-14853. The attack must be carried out from within the local network. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Samsung Galaxy S6 SM-G920F G920FXXU5EQH7 (Smartphone Operating System). Affected by this issue is the function dhd_prot_txdata_write_flush of the file drivers/net/wireless/bcmdhd4358/dhd_msgbuf.c of the component Wi-Fi Driver. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

A NULL pointer dereference in dhd_prot_txdata_write_flush in drivers/net/wireless/bcmdhd4358/dhd_msgbuf.c in the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7 allows an attacker (who has obtained code execution on the Wi-Fi chip) to cause the device to reboot. The Samsung ID is SVE-2018-11783.

The bug was discovered 12/14/2018. The weakness was presented 12/17/2018 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2018-14853 since 08/02/2018. The exploitation is known to be easy. The attack can only be initiated within the local network. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

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

See VDB-128021, VDB-128020, VDB-128019 and VDB-128017 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Smartphone Operating System

Vendor

Samsung

Name

Galaxy S6

Version

SM-G920F G920FXXU5EQH7

License

commercial

Website

Vendor: https://www.samsung.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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

08/02/2018 🔍
12/14/2018 +134 days 🔍
12/17/2018 +3 days 🔍
12/17/2018 +0 days 🔍
12/18/2018 +1 days 🔍
04/21/2020 +490 days 🔍

Sourcesinfo

Vendor: samsung.com

Advisory: github.com
Status: Not defined

CVE: CVE-2018-14853 (🔍)
GCVE (CVE): GCVE-0-2018-14853
GCVE (VulDB): GCVE-100-128018
See also: 🔍

Entryinfo

Created: 12/18/2018 07:51
Updated: 04/21/2020 11:02
Changes: 12/18/2018 07:51 (60), 04/21/2020 11:02 (1)
Complete: 🔍
Cache ID: 216::103

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