TITLE:
Ubuntu Installer Log Files Exposure of User Credentials

SECUNIA ADVISORY ID:
SA19200

VERIFY ADVISORY:
http://secunia.com/advisories/19200/

CRITICAL:
Less critical

IMPACT:
Exposure of sensitive information

WHERE:
Local system

OPERATING SYSTEM:
Ubuntu Linux 5.10
http://secunia.com/product/6606/

DESCRIPTION:
Karl Řie has reported a security issue in Ubuntu, which can be
exploited by malicious, local users to disclose sensitive
information.

The problem is caused due to user credentials being written to
world-readable installation log files during installation. This can
be exploited to disclose the password of the first user account.

SOLUTION:
Apply updated packages.

-- Ubuntu 5.10 (Breezy Badger) --

Source archives:

http://security.ubuntu.com/ubuntu/pool/main/b/base-config/base-config_2.67ubuntu20.dsc
Size/MD5: 758 c22bb6e3be4d59aa93e84327f60e89ab
http://security.ubuntu.com/ubuntu/pool/main/b/base-config/base-config_2.67ubuntu20.tar.gz
Size/MD5: 577194 99eabbe70227169feaff28ff9062d097
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3-37ubuntu8.diff.gz
Size/MD5: 1067297 9db7bb924125a5587380efc08f6787e1
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3-37ubuntu8.dsc
Size/MD5: 876 50cdfae3bfbe1bb1bb4be192d7de19a7
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3.orig.tar.gz
Size/MD5: 1045704 b52dfb2e5e8d9a4a2aae0ca1b266c513

Architecture independent packages:

http://security.ubuntu.com/ubuntu/pool/main/b/base-config/apt-setup-udeb_2.67ubuntu20_all.udeb
Size/MD5: 3298 dd42b2901f6f5d7525083c27cbb23407
http://security.ubuntu.com/ubuntu/pool/main/b/base-config/base-config_2.67ubuntu20_all.deb
Size/MD5: 291224 e95d7a1d25074ea57d444e817cef1850
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/initial-passwd-udeb_4.0.3-37ubuntu8_all.udeb
Size/MD5: 1740 6c7bc8e12968d9876b6e1b27f0476484
http://security.ubuntu.com/ubuntu/pool/main/b/base-config/tzsetup-udeb_2.67ubuntu20_all.udeb
Size/MD5: 2760 f6ebc84fd2bff0275b1e64d53fdc9955

amd64 architecture (Athlon64, Opteron, EM64T Xeon)

http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-37ubuntu8_amd64.deb
Size/MD5: 180662 de75ded6034f0d7226dfbf0ec66e2be7
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-37ubuntu8_amd64.deb
Size/MD5: 589790 f90c48af4e1c55202f22127e72dbf45d

i386 architecture (x86 compatible Intel/AMD)

http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-37ubuntu8_i386.deb
Size/MD5: 171882 347fa929d15c3689bd68fc487cc116c6
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-37ubuntu8_i386.deb
Size/MD5: 515580 b8c965e4a5c40d1c50e8816aeef689bc

powerpc architecture (Apple Macintosh G3/G4/G5)

http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-37ubuntu8_powerpc.deb
Size/MD5: 179886 42ebfcd496b621bdab29e9a6b3f50522
http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-37ubuntu8_powerpc.deb
Size/MD5: 568426 089edb3f8110ab191bba6d061b199385

PROVIDED AND/OR DISCOVERED BY:
Karl Řie

ORIGINAL ADVISORY:
http://www.ubuntu.com/usn/usn-262-1

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