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Debian: 'proftpd' vulnerabilities Print E-mail
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Posted by LinuxSecurity.com Team   
Debian Remote DOS & potential buffer overflow exist with previous versions of proftpd


----------------------------------------------------------------------------
Debian Security Advisory DSA-029-1                       security@debian.org 
http://www.debian.org/security/                                Michael Stone
February 11, 2001
----------------------------------------------------------------------------

Package: proftpd
Vulnerability: remote DOS & potential buffer overflow
Debian-specific: no

The following problems have been reported for the version of proftpd in
Debian 2.2 (potato):

1. There is a memory leak in the SIZE command which can result in a
denial of service, as reported by Wojciech Purczynski. This is only a
problem if proftpd cannot write to its scoreboard file; the default
configuration of proftpd in Debian is not vulnerable.

2. A similar memory leak affects the USER command, also as reported by
Wojciech Purczynski. The proftpd in Debian 2.2 is susceptible to this
vulnerability; an attacker can cause the proftpd daemon to crash by
exhausting its available memory.

3. There were some format string vulnerabilities reported by Przemyslaw
Frasunek. These are not known to have exploits, but have been corrected
as a precaution.

All three of the above vulnerabilities have been corrected in
proftpd-1.2.0pre10-2potato1. We recommend you upgrade your proftpd
package immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 2.2 alias potato
------------------------------------

  Potato was released for the alpha, arm, i386, m68k, powerpc and sparc
  architectures.

  Source archives:
     http://security.debian.org/debian-security/dists/stable/updates/main/source/proftpd_1.2.0pre10-2potato1.diff.gz
      MD5 checksum: ac1f26e4effe5c6d46b9254b5edea94c
     http://security.debian.org/debian-security/dists/stable/updates/main/source/proftpd_1.2.0pre10-2potato1.dsc
      MD5 checksum: 305a6c3ba88afd493d94a3ecd8f92db1
     http://security.debian.org/debian-security/dists/stable/updates/main/source/proftpd_1.2.0pre10.orig.tar.gz
      MD5 checksum: a1c25e59bb4281e2f83000796dc52388

  Alpha architecture:
     http://security.debian.org/debian-security/dists/stable/updates/main/binary-alpha/proftpd_1.2.0pre10-2potato1_alpha.deb
      MD5 checksum: 9f1deb1050544c51de8a5be6e1134d05

  ARM architecture:
     http://security.debian.org/debian-security/dists/stable/updates/main/binary-arm/proftpd_1.2.0pre10-2potato1_arm.deb
      MD5 checksum: 7226be3c206b287959357e3186593a71

  Intel ia32 architecture:
     http://security.debian.org/debian-security/dists/stable/updates/main/binary-i386/proftpd_1.2.0pre10-2potato1_i386.deb
      MD5 checksum: 13f9f7bfb44c09dc1a69fb678aad5f2c

  Motorola 680x0 architecture:
    Not yet available.

  PowerPC architecture:
     http://security.debian.org/debian-security/dists/stable/updates/main/binary-powerpc/proftpd_1.2.0pre10-2potato1_powerpc.deb
      MD5 checksum: 9c03031c8de3da26686605fe7875b8b3

  Sun Sparc architecture:
     http://security.debian.org/debian-security/dists/stable/updates/main/binary-sparc/proftpd_1.2.0pre10-2potato1_sparc.deb
      MD5 checksum: 1a17e4a65319645513ce86c174342d0e

  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/ .

----------------------------------------------------------------------------
For apt-get: deb  http://security.debian.org/ stable/updates main
For dpkg-ftp:  ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show ' and  http://packages.debian.org/



 
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