All I'm asking is for #ResponsibleDisclosure. The tone you sense was my panic as I scrambled to figure out the proof-of-concept to ensure that #FDroid users are kept safe. Signature verification is a key part of that. I cleared my schedule this morning to deal with this.
Thanks to @obfusk to doing the hard work of the proof-of-concept and the patch. I posted my preliminary analysis of the issue on gitlab.com/fdroid/fdroidserver…
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Potential security hazard: `apk_signer_fingerprint()` looks at certs in reverse order that Android checks them (#1128) · Issues · F-Droid / fdroidserver · GitLab
Take a look at apk_signer_fingerprint(): def get_first_signer_certificate(apkpath):...GitLab