Google Android 9.0 dnssd_clientstub.c create_hdr use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability was found in Google Android 9.0 (Smartphone Operating System) and classified as critical. This issue affects the function create_hdr of the file dnssd_clientstub.c. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In create_hdr of dnssd_clientstub.c, there is a possible use after free. 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-9. Android ID: A-121327565.

The bug was discovered 04/03/2019. The weakness was released 04/19/2019 (Website). It is possible to read the advisory at source.android.com. The identification of this vulnerability is CVE-2019-2033 since 12/10/2018. Attacking locally is a requirement. A simple authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

Entries connected to this vulnerability are available at 133864, 133865, 133866 and 133867.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/10/2018 🔍
04/03/2019 +114 days 🔍
04/19/2019 +16 days 🔍
04/20/2019 +1 days 🔍
05/31/2020 +407 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: source.android.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-2033 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 04/20/2019 07:30
Updated: 05/31/2020 10:12
Changes: 04/20/2019 07:30 (60), 05/31/2020 10:12 (2)
Complete: 🔍

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