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Debian Security Advisory DSA-044-1 security@debian.org
http://www.debian.org/security/ Wichert Akkerman
March 13, 2001
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Package : mailx
Problem type : buffer overflow
Debian-specific: no
The mail program (a simple tool to read and send email) as
distributed with Debian GNU/Linux 2.2 has a buffer overflow in the
input parsing code. Since mail is installed setgid mail by default
this allowed local users to use it to gain access to mail group.
Since the mail code was never written to be secure fixing it
properly would mean a large rewrite. Instead of doing this we
decided to no longer install it setgid. This means that it can no
longer lock your mailbox properly on systems for which you need
group mail to write to the mailspool, but it will still work for
sending email.
This has been fixed in mailx version 8.1.1-10.1.5. If you have
suidmanager installed you can also make this manually with the
following command:
suidregister /usr/bin/mail root root 0755
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/mailx_8.1.1-10.1.5.diff.gz
MD5 checksum: bfc7cf2139819cb25750cddc4c939931
http://security.debian.org/dists/stable/updates/main/source/mailx_8.1.1-10.1.5.dsc
MD5 checksum: 564992494f775638eeae0bc3427c513a
http://security.debian.org/dists/stable/updates/main/source/mailx_8.1.1.orig.tar.gz
MD5 checksum: c779002cb043b57fd5198ec2032cacb0
Alpha architecture:
http://security.debian.org/dists/stable/updates/main/binary-alpha/mailx_8.1.1-10.1.5_alpha.deb
MD5 checksum: 37edc09cfe3c96994dfeff42c42fe9b2
ARM architecture:
http://security.debian.org/dists/stable/updates/main/binary-arm/mailx_8.1.1-10.1.5_arm.deb
MD5 checksum: 8c50598bb486d62ad312730083e674f1
Intel ia32 architecture:
http://security.debian.org/dists/stable/updates/main/binary-i386/mailx_8.1.1-10.1.5_i386.deb
MD5 checksum: 18d30b35676fa9887a626c46909c9d9d
Motorola 680x0 architecture:
http://security.debian.org/dists/stable/updates/main/binary-m68k/mailx_8.1.1-10.1.5_m68k.deb
MD5 checksum: 86ef8e4cf85e1634096ba52ed1f10987
PowerPC architecture:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/mailx_8.1.1-10.1.5_powerpc.deb
MD5 checksum: 97ec939047cdb7025095701df840838e
Sun Sparc architecture:
http://security.debian.org/dists/stable/updates/main/binary-sparc/mailx_8.1.1-10.1.5_sparc.deb
MD5 checksum: 7b22c952196f2e604558d4b12ef23932
These files will be moved into
ftp://ftp.debian.org/debian/dists/stable/*/binary-$arch/ soon.
For not yet released architectures please refer to the appropriate
directory ftp://ftp.debian.org/debian/dists/sid/binary-$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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