Google Android 8.0/8.1/9.0 ClearKey CAS Descrambler race condition
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.9 | $0-$5k | 0.00 |
A vulnerability was found in Google Android 8.0/8.1/9.0 (Smartphone Operating System). It has been classified as critical. Affected is some unknown processing of the component ClearKey CAS Descrambler. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
In the ClearKey CAS descrambler, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-8.0 Android-8.1 Android-9. Android ID: A-113027383
The bug was discovered 11/05/2018. The weakness was presented 11/14/2018 (Website). The advisory is shared for download at source.android.com. This vulnerability is traded as CVE-2018-9539 since 04/05/2018. The attack needs to be approached locally. Required for exploitation is a authentication. There are neither technical details nor an exploit publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $25k-$100k.
Applying a patch is able to eliminate this problem.
See 126869, 126875, 126870 and 126871 for similar entries.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.1VulDB Meta Temp Score: 6.0
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.0
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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: 🔍
Exploiting
Class: Race conditionCWE: CWE-362
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Timeline
04/05/2018 🔍11/05/2018 🔍
11/05/2018 🔍
11/14/2018 🔍
11/14/2018 🔍
11/15/2018 🔍
04/13/2020 🔍
Sources
Vendor: google.comAdvisory: source.android.com
Status: Not defined
Confirmation: 🔍
CVE: CVE-2018-9539 (🔍)
SecurityFocus: 105865 - Google Android Media Framework Component Multiple Security Vulnerabilities
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍
Entry
Created: 11/15/2018 09:50Updated: 04/13/2020 10:24
Changes: 11/15/2018 09:50 (62), 04/13/2020 10:24 (4)
Complete: 🔍
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