Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2001.338 -- Debian Security Advisory DSA-070-1
netkit-telnet AYT buffer overflow
14 August 2001
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AusCERT Security Bulletin Summary
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Product: netkit-telnet
Vendor: Debian
Operating System: Debian GNU/Linux 2.2
Platform: Alpha
ARM
i386
Motorola 680x0
PowerPC
Sparc
Impact: Execute Arbitrary Code/Commands
Access Required: Remote
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Debian Security Advisory DSA-070-1 security@debian.org
http://www.debian.org/security/ Robert van der Meulen
August 10, 2001
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Package : netkit-telnet
Problem type : remote exploit
Debian-specific: no
The telnet daemon contained in the netkit-telnet_0.16-4potato1 package in
the 'stable' (potato) distribution of Debian GNU/Linux is vulnerable to an
exploitable overflow in its output handling.
The original bug was found by <scut@nb.in-berlin.de>, and announced to
bugtraq on Jul 18 2001. At that time, netkit-telnet versions after 0.14 were
not believed to be vulnerable.
On Aug 10 2001, zen-parse posted an advisory based on the same problem, for
all netkit-telnet versions below 0.17.
More details can be found on http://www.securityfocus.com/archive/1/203000 .
As Debian uses the 'telnetd' user to run in.telnetd, this is not a remote
root compromise on Debian systems; the 'telnetd' user can be compromised.
We strongly advise you update your netkit-telnet packages to the versions
listed below.
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
Debian GNU/Linux 2.2 alias potato
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Potato was released for alpha, arm, i386, m68k, powerpc and sparc.
Source archives:
http://security.debian.org/dists/stable/updates/main/source/netkit-telnet_0.16-4potato.2.diff.gz
MD5 checksum: 7da3f346ec6f75cf9069a60627b5d846
http://security.debian.org/dists/stable/updates/main/source/netkit-telnet_0.16.orig.tar.gz
MD5 checksum: d829b432eec6a2ff0d866869445f1303
http://security.debian.org/dists/stable/updates/main/source/netkit-telnet_0.16-4potato.2.dsc
MD5 checksum: 197bce85871845b0223b4fa9038c1cb3
Alpha architecture:
http://security.debian.org/dists/stable/updates/main/binary-alpha/telnet_0.16-4potato.2_alpha.deb
MD5 checksum: 8baae434348115c1a261858b851b3771
http://security.debian.org/dists/stable/updates/main/binary-alpha/telnetd_0.16-4potato.2_alpha.deb
MD5 checksum: f54812129a40d2c2df3d17817612274b
ARM architecture:
http://security.debian.org/dists/stable/updates/main/binary-arm/telnet_0.16-4potato.2_arm.deb
MD5 checksum: 0e0c673d7b4ec972c7206c8d3d7c33b6
http://security.debian.org/dists/stable/updates/main/binary-arm/telnetd_0.16-4potato.2_arm.deb
MD5 checksum: 8c6c832af4b2aa002fe5e7d28a9fe862
Intel IA-32 architecture:
http://security.debian.org/dists/stable/updates/main/binary-i386/telnet_0.16-4potato.2_i386.deb
MD5 checksum: 9bdc63c4b0dee55a5ded30203edfd619
http://security.debian.org/dists/stable/updates/main/binary-i386/telnetd_0.16-4potato.2_i386.deb
MD5 checksum: a65483b5f60a14b69ef81e51a596bd84
Motorola 680x0 architecture:
http://security.debian.org/dists/stable/updates/main/binary-m68k/telnet_0.16-4potato.2_m68k.deb
MD5 checksum: 93ddab1a31a37cc9495d0432cb05ff4e
http://security.debian.org/dists/stable/updates/main/binary-m68k/telnetd_0.16-4potato.2_m68k.deb
MD5 checksum: 487c5b972e568d7dff4e2ad71349dc57
PowerPC architecture:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/telnet_0.16-4potato.2_powerpc.deb
MD5 checksum: 7e3d66416e88aa069d15d1cef64974b3
http://security.debian.org/dists/stable/updates/main/binary-powerpc/telnetd_0.16-4potato.2_powerpc.deb
MD5 checksum: 2738a29f80edeabc9fa7109253364dd0
Sun Sparc architecture:
http://security.debian.org/dists/stable/updates/main/binary-sparc/telnet_0.16-4potato.2_sparc.deb
MD5 checksum: fef54ee3d64113ff1cdb0d9f4437f34e
http://security.debian.org/dists/stable/updates/main/binary-sparc/telnetd_0.16-4potato.2_sparc.deb
MD5 checksum: 91469be1ac617b246e459210a11aca8e
These packages will be moved into the stable distribution on its next
revision.
For not yet released architectures please refer to the appropriate
directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .
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apt-get: deb http://security.debian.org/ stable/updates main
dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
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