A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:NLow · next 30 days
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A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
Proof-of-concept exploit for CVE-2020-8289 demonstrating remote code execution as SYSTEM/root via Backblaze backup client's SSL verification bypass and unvalidated update mechanism.
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