Detect security update on Squeeze LTS

[Olivier Bonvalet <ob@daevel.fr>]

Hi,

I use «update-notifier-common» to detect pending security updates from
my centralized monitoring, but it's not working for Squeeze LTS since
updates are not identified as security ones.

For example :

        ~$ /usr/lib/update-notifier/apt-check
        11;0
        
Where the first column (here «11») stand for not security updates (like
tzdata or clamav database for example), and the second column (here «0»)
stand for security updates.

And an «aptitude -V dist-upgrade» say :

        Les paquets suivants seront mis à jour :      
          e2fslibs [1.41.12-4stable1 -> 1.41.12-4+deb6u2]  
          e2fsprogs [1.41.12-4stable1 -> 1.41.12-4+deb6u2]  
          gnupg [1.4.10-4+squeeze6 -> 1.4.10-4+squeeze7]  
          gpgv [1.4.10-4+squeeze6 -> 1.4.10-4+squeeze7]  libc-bin [2.11.3-4+deb6u4 -> 2.11.3-4+deb6u5]  
          libc6 [2.11.3-4+deb6u4 -> 2.11.3-4+deb6u5]  libc6-i386 [2.11.3-4+deb6u4 -> 2.11.3-4+deb6u5]  
          libssl0.9.8 [0.9.8o-4squeeze19 -> 0.9.8o-4squeeze20]  
          linux-image-3.2.0-0.bpo.4-amd64 [3.2.65-1+deb7u1~bpo60+1 -> 3.2.65-1+deb7u2~bpo60+1]  
          locales [2.11.3-4+deb6u4 -> 2.11.3-4+deb6u5]  
          openssl [0.9.8o-4squeeze19 -> 0.9.8o-4squeeze20]  
        
Is there an easy way to fix that detection ?

Thanks,
Olivier