Vulnerability CVE-2018-19981
Published: 2019-04-04

Description:
Amazon AWS SDK <=2.8.5 for Android uses Android SharedPreferences to store plain text AWS STS Temporary Credentials retrieved by AWS Cognito Identity Service. An attacker can use these credentials to create authenticated and/or authorized requests. Note that the attacker must have "root" privilege access to the Android filesystem in order to exploit this vulnerability (i.e. the device has been compromised, such as disabling or bypassing Android's fundamental security mechanisms).

Type:

CWE-312

 (Cleartext Storage of Sensitive Information)

CVSS2 => (AV:N/AC:L/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9/10
10/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Amazon -> Amazon web services software development kit 

 References:
https://aws-amplify.github.io/aws-sdk-android/docs/reference/com/amazonaws/auth/CognitoCachingCredentialsProvider.html
https://raw.githubusercontent.com/lorenzodifuccia/cloudflare/master/Images/vulns/aws/aws_sdk_sp_01.png
https://raw.githubusercontent.com/lorenzodifuccia/cloudflare/master/Images/vulns/aws/aws_sdk_sp_02.png
https://raw.githubusercontent.com/lorenzodifuccia/cloudflare/master/Images/vulns/aws/aws_sdk_sp_03.png
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