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Category Archives: Security

MySQL password expiration features to help you comply with PCI-DSS

PCI Compliance (section 8.2.4) requires users to change password every 90 days. Until MySQL 5.6.6 there wasn’t a built-in way to comply with this requirement. Since MySQL version 5.6.6 there’s a password_expired feature which allows …

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OpenSSH CVE-2016-0777: Details and Mitigation

Earlier today advisories were sent out regarding OpenSSH versions 5.4 through 7.1., informing users about a security bug in the software. In essence, the advisory instructed people to add the   UseRoaming no option to their ssh_config file, …

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MongoDB and Percona TokuMX Security Guidelines

Several reports we’re published in the news about how easy it is to access data stored in some NoSQL systems, including MongoDB. This is not surprising because security was rather relaxed in earlier versions of …

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Tips for avoiding malware from a lesson learned

In a recent article on the Percona blog, I recommended readers to a tool called CamStudio for making technical screen recordings. The blog post was very popular and got 300+ Facebook likes in a short …

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Percona security update: oCERT and SSL improvements

We have recently become a member of oCERT to aid in allowing responsible disclosure for Percona products and services as can be seen on their members page. We are presently working on the verbiage for …

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Percona Security Advisory CVE-2015-1027

Contents Summary Analysis Mitigating factors P.O.C Acknowledgments Summary During a code audit performed internally at Percona, we discovered a viable information disclosure attack when coupled with a MITM attack in which percona-toolkit and xtrabackup perl …

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How to test if CVE-2015-0204 FREAK SSL security flaw affects you

The CVE-2015-0204 FREAK SSL vulnerability abuses intentionally weak “EXPORT” ciphers which could be used to perform a transparent Man In The Middle attack. (We seem to be continually bombarded with not only SSL vulnerabilities but the …

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GHOST vulnerability (CVE-2015-0235) Percona response

Cloud security company Qualys announced Tuesday the issues prevalent in glibc since version 2.2 introduced in 2000-11-10 (the complete Qualys announcement may be viewed here). The vulnerability, CVE-2015-0235, has been dubbed “GHOST.” As the announcement …

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File carving methods for the MySQL DBA

This is a long overdue blog post from London’s 44con Cyber Security conference back in September. A lot of old memories were brought to the front as it were; the one I’m going to cover in …

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(More) Secure local passwords in MySQL 5.6 and up

I log into a lot of different servers running MySQL and one of the first things I do is create a file in my home directory called ‘.my.cnf’ with my credentials to that local mysql …

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