VDB-127172 · CVE-2018-11918 · GCVE-0-2018-11918

Google Android Linux Kernel probe double free

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.
7.6	$5k-$25k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Google Android. Affected by this issue is the function probe of the component Linux Kernel. Such manipulation leads to double free. This vulnerability is uniquely identified as CVE-2018-11918. Local access is required to approach this attack. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Android (Smartphone Operating System) (the affected version unknown). Affected by this issue is the function probe of the component Linux Kernel. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, memory allocated is automatically released by the kernel if the 'probe' function fails with an error code.

The bug was discovered 11/05/2018. The weakness was disclosed 11/27/2018 (Website). The advisory is shared for download at source.codeaurora.org. This vulnerability is handled as CVE-2018-11918 since 06/07/2018. 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 current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/11/2023). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 22 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

The entries VDB-127176, VDB-127175, VDB-127174 and VDB-127173 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Smartphone Operating System

Vendor

Google

Name

Android

License

free

Website

Vendor: https://www.google.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
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: Double free
CWE: CWE-415 / 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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: source.codeaurora.org

Timelineinfo

06/07/2018 🔍
11/05/2018 +151 days 🔍
11/27/2018 +22 days 🔍
11/27/2018 +0 days 🔍
11/28/2018 +1 days 🔍
06/11/2023 +1656 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: source.codeaurora.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-11918 (🔍)
GCVE (CVE): GCVE-0-2018-11918
GCVE (VulDB): GCVE-100-127172
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 11/28/2018 07:56
Updated: 06/11/2023 15:52
Changes: 11/28/2018 07:56 (60), 04/15/2020 10:33 (2), 06/11/2023 15:52 (4)
Complete: 🔍
Cache ID: 216::103