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"Trust anchor for certification path not found" when using custom CA, even after installing into trust store #191

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adityaruplaha opened this issue Nov 23, 2024 · 1 comment · May be fixed by #204
Open

"Trust anchor for certification path not found" when using custom CA, even after installing into trust store #191

adityaruplaha opened this issue Nov 23, 2024 · 1 comment · May be fixed by #204

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@adityaruplaha
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Firstly, thanks for this awesome app!

I run a personal CA for my self-hosted WebDAV server. While certificate overriding is possible for the desktop application, for the Android application, even adding the custom CA to the system-wide trust store doesn't work, as Zotero is configured to accept only pre-installed system certificates (see https://developer.android.com/privacy-and-security/security-config#certificates):

zotero-android/app/src/main/res/xml/network_security_config.xml

Line 10 in d640dcd

<certificates src="system" />

This is a problem for those using self-hosted or institutional WebDAV servers. The fix is trivial, moving

zotero-android/app/src/main/res/xml/network_security_config.xml

Line 15 in d640dcd

<certificates src="user" />
into the base-config section.

I feel that Android has plenty of safeguards against users accidentally adding CAs opening their traffic up to interception, so this change would not significantly impact security, and would be an important QOL improvement for a good chunk of users.
@adityaruplaha
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A corresponding thread has been filed on the forums: https://forums.zotero.org/discussion/120678/custom-ca-on-android

adityaruplaha added a commit to adityaruplaha/zotero-android that referenced this issue Dec 27, 2024
@adityaruplaha
Fix zotero#191 by trusting user-installed CAs.
70ae8d7
@adityaruplaha adityaruplaha linked a pull request Dec 27, 2024 that will close this issue
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Trust user-installed CAs in release builds. adityaruplaha/zotero-android
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@adityaruplaha