Google Android Linux Kernel use after 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.
6.8$5k-$25k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Google Android. Affected by this vulnerability is an unknown functionality of the component Linux Kernel. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2018-5873. The attack requires local access. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical was found in Google Android (Smartphone Operating System) (unknown version). This vulnerability affects an unknown code block of the component Linux Kernel. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Due to a race condition when accessing files in all Android releases from CAF using the Linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-07-05, a Use After Free condition in the kernel can occur.

The bug was discovered 07/05/2018. The weakness was presented 07/06/2018 (Website). The advisory is available at source.android.com. This vulnerability was named CVE-2018-5873 since 01/19/2018. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/05/2023). 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 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 117769 (Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4227)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157806 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2018-4227)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117769) and SecurityFocus (BID 100497†). See VDB-105729, VDB-120531, VDB-120537 and VDB-123745 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 117769
Nessus Name: Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4227)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

08/25/2017 🔍
01/19/2018 +147 days 🔍
07/05/2018 +167 days 🔍
07/06/2018 +0 days 🔍
07/06/2018 +0 days 🔍
07/07/2018 +1 days 🔍
09/26/2018 +81 days 🔍
09/27/2018 +1 days 🔍
04/05/2023 +1651 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: 073c516ff73557a8f7315066856c04b50383ac34
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-5873 (🔍)
GCVE (CVE): GCVE-0-2018-5873
GCVE (VulDB): GCVE-100-120538
SecurityFocus: 100497 - Linux Kernel 'drivers/acpi/acpica/nseval.c' Local Information Disclosure Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 07/07/2018 09:23
Updated: 04/05/2023 08:29
Changes: 07/07/2018 09:23 (72), 02/26/2020 15:23 (5), 04/05/2023 08:29 (5)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!