Duplicate Meta descriptions in Webmaster

All these easyblog pages default to the Meta description of the main site.

/2013-07-08-16-06-46
/blog-categories/categories/listings/tech-discussion
/blog-management
/blog/are-your-online-purchases-safe
/blog/blogger/listings/bapcs
/blog/blogger/listings/hsaleh80
/blog/categories/listings/computer-guides
/blog/categories/rss?layout=listings&start=10
/blog/categories/rss?layout=listings&start=15
/blog/categories/rss?layout=listings&start=5
/blog/categories/tech-discussion
/blog/categories/uncategorized
/blog/categories?layout=listings&start=20
/blog/categories?layout=listings&start=25
/blog/dashboard
/blog/diy-computer-repair-not-for-everyone
/blog/what-are-the-reasons-macs-are-increasing-in-popularity
/component/content/?view=featured
/component/content/category/89-website
/component/easyblog/blogger/bapcs/statistic/category/computer-guides
/drafts
/edit-profile
/login
/micro-posting
/my-blogs
/page-has-moved

And these share the same meta data as each other which is the categories description
/blog-categories
/blog/categories/rss
/blog/categories

And these share the default meta data of the main blog page
/blog/author/store/index.php?route=product/search&filter_name=apple
/blog/date/2012/3/4
/blog/date/2012/3/store/index.php?route=product/search&filter_name=apple
/blog
/blog?lang=none&limitstart=0
/blog?lang=none&start=10
/blog?lang=none&start=15
/blog?lang=none&start=20
/blog?lang=none&start=30
/blog?lang=none&start=5
/blog?route=product/search&filter_name=apple&start=10
/blog?start=20
/blog?start=25
/blog?start=30

Plus I am getting duplicates like
/blog-categories/categories/listings/categoryname
/blog/categories/listings/categoryname
/blog/categories/categoryname

I would appreciate help in resolving this