kwalletd in KWallet before KDE Applications 14.12.0 uses Blowfish with ECB mode instead of CBC mode when encrypting the password store, which makes it easier for attackers to guess passwords via a codebook attack.
https://www.kde.org/info/security/advisory-20150109-1.txt
https://security.gentoo.org/glsa/201606-19
https://bugzilla.redhat.com/show_bug.cgi?id=1048168
http://www.securityfocus.com/bid/67716