bugtraq - [USN-102-1] shar vulnerabilities

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Date: Tue, 29 Mar 2005 14:13:20 +0200
From: Martin Pitt <martin.pitt@...onical.com>
To: ubuntu-security-announce@...ts.ubuntu.com
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: [USN-102-1] shar vulnerabilities

===========================================================
Ubuntu Security Notice USN-102-1	     March 29, 2005
sharutils vulnerabilities
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=242597
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265904
===========================================================

A security issue affects the following Ubuntu releases:

Ubuntu 4.10 (Warty Warthog)

The following packages are affected:

sharutils

The problem can be corrected by upgrading the affected package to
version 1:4.2.1-10ubuntu0.1.  In general, a standard system upgrade is
sufficient to effect the necessary changes.

Details follow:

Shaun Colley discovered a buffer overflow in "shar" that was triggered
by output files (specified with -o) with names longer than 49
characters. This could be exploited to run arbitrary attacker
specified code on systems that automatically process uploaded files
with shar.

Ulf Harnhammar discovered that shar does not check the data length
returned by the 'wc' command. However, it is believed that this cannot
actually be exploited on real systems.

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1-10ubuntu0.1.diff.gz
      Size/MD5:     7692 7d0ac5f9d30e814f3bb8a920a384efd0
    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1-10ubuntu0.1.dsc
      Size/MD5:      634 400f8c2b587de06d80b961f416069c40
    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1.orig.tar.gz
      Size/MD5:   306022 b8ba1d409f07edcb335ff72a27bd9828

  Architecture independent packages:

    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils-doc_4.2.1-10ubuntu0.1_all.deb
      Size/MD5:    27834 f95e85a0a3bc6b8998161e4ae0e19020

  amd64 architecture (Athlon64, Opteron, EM64T Xeon)

    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1-10ubuntu0.1_amd64.deb
      Size/MD5:   113868 20cc7d70f9c93d46772bd8a2eaceaa80

  i386 architecture (x86 compatible Intel/AMD)

    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1-10ubuntu0.1_i386.deb
      Size/MD5:   110696 c96e763f35d05965f189cf97b9d7a323

  powerpc architecture (Apple Macintosh G3/G4/G5)

    http://security.ubuntu.com/ubuntu/pool/main/s/sharutils/sharutils_4.2.1-10ubuntu0.1_powerpc.deb
      Size/MD5:   112594 d458759940e4a6396622b3da7866ef84

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