CVE-2020-8133

Nextcloud Server 19.0.1 vulnerability (CVE-2020-8133) arises from incorrect passphrase generation for the encrypted block, enabling an attacker to silently overwrite blocks within a file. Public sources (Nextcloud advisory NC-SA-2020-038) describe MAC-based encryption weaknesses that can be explo...

CVE-2020-8133

A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file...

Nextcloud Server Encryption Issue Vulnerability

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server 18.0.4, which stems from too small a random character set being used for encryption, making decryption tim...

Nextcloud Server Authorization Issues Vulnerability (CNVD-2020-64589)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. An authorization issue vulnerability exists in Nextcloud Server 19.0.1, which stems from a misconfiguration that allows users to feel that a passwordless...

CVE-2020-8183

A logic error in Nextcloud Server 19.0.0 caused a plaintext storage of the share password when it was given on the initial create API call...

CVE-2020-8183

A logic error in Nextcloud Server 19.0.0 caused a plaintext storage of the share password when it was given on the initial create API call...

CVE-2020-8173

A too small set of random characters being used for encryption in Nextcloud Server 18.0.4 allowed decryption in shorter time than intended...

Nextcloud Server Elevation of Privilege Vulnerability

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server 19.0.0, which stems from a logic error resulting in an escalation of privileges that allows malicious user...

PT-2020-20067 · Nextcloud +1 · Nextcloud Server +1

Name of the Vulnerable Software and Affected Versions: Nextcloud Server version 19.0.1 Description: The issue is related to insufficient protection of server-side encryption keys, allowing an attacker to replace these keys. Recommendations: For Nextcloud Server version 19.0.1, update to a version...

PT-2020-20047 · Nextcloud +1 · Nextcloud Server +1

Name of the Vulnerable Software and Affected Versions: Nextcloud Server version 19.0.1 Description: The issue arises from a misconfiguration in Nextcloud Server, where the user is incorrectly led to believe that passwordless WebAuthn also serves as two-factor verification. This misconception occu...

PT-2020-20000 · Nextcloud +1 · Nextcloud Server +1

Name of the Vulnerable Software and Affected Versions: Nextcloud Server version 18.0.4 Description: A too small set of random characters being used for encryption allowed decryption in a shorter time than intended. Recommendations: For Nextcloud Server version 18.0.4, update to a version that use...

PT-2020-20008 · Nextcloud +2 · Nextcloud Server +2

Name of the Vulnerable Software and Affected Versions: Nextcloud Server version 19.0.0 Description: A logic error caused the plaintext storage of the share password when it was given on the initial create API call. Recommendations: For Nextcloud Server version 19.0.0, update to a version that fix...

CVE-2020-8223

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves...

Privilege escalation

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves...

Improper integrity protection of server-side encryption keys (NC-SA-2020-041)

Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the encryption keys...

Denial of Service by requesting to reset a password (NC-SA-2021-003)

A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user...

Improper confidentiality protection of server-side encryption keys (NC-SA-2020-040)

Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the public key to decrypt them later on...

Message Authentication Codes calculated by the Default Encryption Module allow an attacker to silently overwrite blocks in a file (NC-SA-2020-038)

A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file...

Downgrade encryption scheme and break integrity through known-plaintext attack (NC-SA-2020-039)

A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files...

Increase random used for encryption (NC-SA-2020-023)

A too small set of random characters being used for encryption in Nextcloud Server 18.0.4 allowed decryption in shorter time than intended...