Vulnerability CVE-2016-6225
Published: 2017-03-23

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.

Type:

CWE-326

 (Inadequate Encryption Strength)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Percona -> Xtrabackup 
Opensuse project -> LEAP 
Opensuse -> LEAP 
Novell -> LEAP 
Fedoraproject -> Fedora 

 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@lists.fedoraproject.org/message/BAHI6ETS22FJCMLW7A6SICFKQXF5G2VI/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBVCP6KLFVGG6HSGLHLTMZRD6C4IJSZP/
https://www.percona.com/blog/2017/01/12/cve-2016-6225-percona-xtrabackup-encryption-iv-not-set-properly/
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