CVE-2016-6225

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-03-23 · updated 2026-06-17
Weakness: CWE-326

Description

xbcrypt in Percona XtraBackup before 2.3.6 and 2.4.x before 2.4.5 does not properly set the initialization vector (IV) for encryption, which makes it easier for context-dependent attackers to obtain sensitive information from encrypted backup files via a Chosen-Plaintext attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-6394.

Affected products

Fedoraproject Fedora: 24, 25
openSUSE Leap: 42.1, 42.2
percona Xtrabackup: through 2.3.5; 2.4.0-rc1, 2.4.1, 2.4.2, 2.4.3, 2.4.4

References

http://lists.opensuse.org/opensuse-updates/2017-01/msg00125.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00126.html
https://bugs.launchpad.net/percona-xtrabackup/+bug/1643949
https://github.com/percona/percona-xtrabackup/pull/266
https://github.com/percona/percona-xtrabackup/pull/267
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BAHI6ETS22FJCMLW7A6SICFKQXF5G2VI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBVCP6KLFVGG6HSGLHLTMZRD6C4IJSZP/
https://www.percona.com/blog/2017/01/12/cve-2016-6225-percona-xtrabackup-encryption-iv-not-set-properly/
http://lists.opensuse.org/opensuse-updates/2017-01/msg00125.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00126.html
https://bugs.launchpad.net/percona-xtrabackup/+bug/1643949
https://github.com/percona/percona-xtrabackup/pull/266

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