CVE-2022-20230: CRLF Injection in KeyChainActivity can trick user into disclosing keys in KeyChain

platform/packages/apps/KeyChain Updated 02 Oct 2025

Summary

01/07/2022

Disclosed on

CVE-2022-20230

CVE

Yes i

Fix available

High

Severity

Not published

CVSS Score

CVE-2022-20230: In choosePrivateKeyAlias of KeyChain.java, there is a possible access to the user's certificate due to improper input validation. Affects platform/packages/apps/KeyChain across 4 version ranges.

>= 10:0, < 10:2022-07-01 >= 11:0, < 11:2022-07-01 >= 12:0, < 12:2022-07-01 >= 12L:0, < 12L:2022-07-01

Fixed in 10:2022-07-01. How to fix ↓

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Background

The KeyChain package is a part of the Android ecosystem and is responsible for managing the secure storage of cryptographic keys, certificates, and credentials. It provides a secure and convenient way for applications to access and use these sensitive resources. However, a vulnerability has been discovered in the KeyChainActivity component, which can be exploited to trick users into disclosing their keys stored in the KeyChain.

Vulnerability Detail

The vulnerability exists in the choosePrivateKeyAlias function of KeyChain.java. Due to improper input validation, an attacker can inject CRLF (Carriage Return Line Feed) characters into the input, leading to a CRLF injection vulnerability. By manipulating the input, an attacker can trick the user into selecting a malicious certificate, which can then be used to access sensitive information stored in the KeyChain. This vulnerability does not require any additional execution privileges and can be exploited with user interaction.

How To Fix

Minimum fixed version

10:2022-07-01

This is the first release that contains the fix.

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Workaround

There is no known workaround for this vulnerability. It is recommended to apply the fix provided by the KeyChain package as soon as possible.

Conclusion

In conclusion, the KeyChainActivity component in the KeyChain package is vulnerable to CRLF injection, which can be exploited to trick users into disclosing their keys stored in the KeyChain. Developers should update their applications to use the latest version of the KeyChain package to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for platform/packages/apps/KeyChain →