A new installer vulnerability update is available for Ubuntu Linux. Here the announcement:
Ubuntu Security Notice USN-316-1 July 12, 2006
Installer vulnerability
https://launchpad.net/bugs/48350
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A security issue affects the following Ubuntu releases:
Ubuntu 6.06 LTS
This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 6.06 LTS:
passwd 1:4.0.13-7ubuntu3.2
In general, a standard system upgrade is sufficient to effect the
necessary changes.
Details follow:
Iwan Pieterse discovered that, if you select "Go Back" at the final
message displayed by the alternate or server CD installer ("Installation
complete") and then continue with the installation from the installer's
main menu, the root password is left blank rather than locked. This was
due to an error while clearing out the root password from the
installer's memory to avoid possible information leaks.
Installations from the alternate or server CDs when the user selected
"Continue" when the "Installation complete" message was first displayed
are not affected by this bug. Installations from the desktop CD are not
affected by this bug at all.
When you upgrade your passwd package to the newest version, it will
detect this condition and lock the root password if it was previously
blank. The next point release of Ubuntu 6.06 LTS will include a
corrected installer.
Updated packages for Ubuntu 6.06 LTS:
Source archives:
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.13-7ubu=
ntu3.2.diff.gz
Size/MD5: 204800 1b29e1615364944d98ea95498d6058b8
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.13-7ubu=
ntu3.2.dsc
Size/MD5: 885 8ccf50d026fa2c4cffe85330f0d0985a
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.13.orig=
=2Etar.gz
Size/MD5: 1622557 034fab52e187e63cb52f153bb7f304c8
http://security.ubuntu.com/ubuntu/pool/main/u/user-setup/user-setup_1.1=
ubuntu4.dsc
Size/MD5: 678 544762def71fb062b6d6f5484a4d7c45
http://security.ubuntu.com/ubuntu/pool/main/u/user-setup/user-setup_1.1=
ubuntu4.tar.gz
Size/MD5: 98334 f8d648ce6a9a007740b0e175b92385eb
Architecture independent packages:
http://security.ubuntu.com/ubuntu/pool/main/u/user-setup/user-setup-ude=
b_1.1ubuntu4_all.udeb
Size/MD5: 79418 4ec2af1d5e09f129d486c142575f4081
http://security.ubuntu.com/ubuntu/pool/main/u/user-setup/user-setup_1.1=
ubuntu4_all.deb
Size/MD5: 161864 bc876d6099a323cebd2ffc94df41db06
amd64 architecture (Athlon64, Opteron, EM64T Xeon)
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.13-7ubun=
tu3.2_amd64.deb
Size/MD5: 249450 bfdba1450cbe14f6c71f5d9dee5df9b3
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.13-7ubu=
ntu3.2_amd64.deb
Size/MD5: 683510 547ad48ac45f6f11cacbd268f42b152a
i386 architecture (x86 compatible Intel/AMD)
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.13-7ubun=
tu3.2_i386.deb
Size/MD5: 240938 8500a4c2ab53f11b3fb8cb7fb4e00c78
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.13-7ubu=
ntu3.2_i386.deb
Size/MD5: 616346 a29d90e0ae7c7c70cbeffcbfba6bf04e
powerpc architecture (Apple Macintosh G3/G4/G5)
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.13-7ubun=
tu3.2_powerpc.deb
Size/MD5: 251380 bd408187e20f19222e2b4fefe8706552
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.13-7ubu=
ntu3.2_powerpc.deb
Size/MD5: 665158 4975fe8598b4a8adc98fabcee1b4cb8e
sparc architecture (Sun SPARC/UltraSPARC)
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.13-7ubun=
tu3.2_sparc.deb
Size/MD5: 239930 85dde4bfa6d09491338f70efe9d6d336
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.13-7ubu=
ntu3.2_sparc.deb
Size/MD5: 620124 b0fcdadde2568b1a8324e2500718a18b
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