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Debian Security Advisories: w3m, procmail, and xvt

Oct 18, 2001, 16:47 (0 Talkback[s])
Date: Thu, 18 Oct 2001 15:23:09 +0200
From: Martin Schulze 
Subject: [SECURITY] [DSA 081-1] New w3m packages fix buffer overflow

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- --------------------------------------------------------------------------
Debian Security Advisory DSA 081-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
October 18th, 2001
- --------------------------------------------------------------------------

Packages       : w3m, w3m-ssl
Vulnerability  : Buffer Overflow
Problem-Type   : remote code execution
Debian-specific: no

In SNS Advisory No. 32 a buffer overflow vulnerability has been
reported in the routine which parses MIME headers that are returned
from web servers.  A malicious web server administrator could exploit
this and let the client web browser execute arbitrary code.

W3m handles MIME headers included in the request/response message of
HTTP communication like any other we bbrowser.  A buffer overflow will
be occur when w3m receives a MIME encoded header with base64 format.

This problem has been fixed by the maintainer in version
0.1.10+0.1.11pre+kokb23-4 of w3m and w3m-ssl (for the SSL-enabled
version), both for Debian GNU/Linux 2.2.

We recommend that you upgrade your w3m packages immediately.

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

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

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


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

  Source archives:

    http://security.debian.org/dists/stable/updates/main/source/w3m_0.1.10+0.1.11pre+kokb23-4.diff.gz
      MD5 checksum: 94e868f1fa21be50a56d40007a21acc6
    http://security.debian.org/dists/stable/updates/main/source/w3m_0.1.10+0.1.11pre+kokb23.orig.tar.gz
      MD5 checksum: 8f4503bbc966761d806d770fe1632450
    http://security.debian.org/dists/stable/updates/main/source/w3m_0.1.10+0.1.11pre+kokb23-4.dsc
      MD5 checksum: 46bd8e55a198036391b57a847486c303
    http://security.debian.org/dists/stable/updates/main/source/w3m-ssl_0.1.10+0.1.11pre+kokb23-4.dsc
      MD5 checksum: 6bc881ce595e5f723bcbd61dc6520523
    http://security.debian.org/dists/stable/updates/main/source/w3m-ssl_0.1.10+0.1.11pre+kokb23-4.tar.gz
      MD5 checksum: c857fd94c8e76f451ddfc3e59ce2d678

  Alpha architecture:

    http://security.debian.org/dists/stable/updates/main/binary-alpha/w3m_0.1.10+0.1.11pre+kokb23-4_alpha.deb
      MD5 checksum: 2da17834f750361ef11f956aea86bcdc
    http://security.debian.org/dists/stable/updates/main/binary-alpha/w3m-ssl_0.1.10+0.1.11pre+kokb23-4_alpha.deb
      MD5 checksum: b5b17b0ab958e1ce5ae82998c8c52a21

  ARM architecture:

    http://security.debian.org/dists/stable/updates/main/binary-arm/w3m_0.1.10+0.1.11pre+kokb23-4_arm.deb
      MD5 checksum: da67534b0182355a57618231addd92ae
    http://security.debian.org/dists/stable/updates/main/binary-arm/w3m-ssl_0.1.10+0.1.11pre+kokb23-4_arm.deb
      MD5 checksum: cd5a22df1fbca97ec3ce9d7a6760ab41

  Intel ia32 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-i386/w3m_0.1.10+0.1.11pre+kokb23-4_i386.deb
      MD5 checksum: 7b811019f0f246338cbf438952358b54
    http://security.debian.org/dists/stable/updates/main/binary-i386/w3m-ssl_0.1.10+0.1.11pre+kokb23-4_i386.deb
      MD5 checksum: 07c9aa2738a22e4984c290657c71b79d

  PowerPC architecture:

    http://security.debian.org/dists/stable/updates/main/binary-powerpc/w3m_0.1.10+0.1.11pre+kokb23-4_powerpc.deb
      MD5 checksum: 64211980c4101e493aa2c0f906c6be9c

  Sun Sparc architecture:

    http://security.debian.org/dists/stable/updates/main/binary-sparc/w3m_0.1.10+0.1.11pre+kokb23-4_sparc.deb
      MD5 checksum: 4016ba11b084cd94e6023b47e7270f74
    http://security.debian.org/dists/stable/updates/main/binary-sparc/w3m-ssl_0.1.10+0.1.11pre+kokb23-4_sparc.deb
      MD5 checksum: 4a50edab63b9fe3c6c40638902018ebb


  w3m-ssl is not available for stable/powerpc and neither w3m nor
  w3m-ssl are available for m68k.

  These files will be moved into the stable distribution on its next
  revision.


Date: Thu, 18 Oct 2001 15:24:21 +0200
From: Martin Schulze 
Subject: [SECURITY] [DSA 082-1] News Xvt packages fix buffer overflow

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- --------------------------------------------------------------------------
Debian Security Advisory DSA 082-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
October 18th, 2001
- --------------------------------------------------------------------------

Package        : xvt
Vulnerability  : Buffer Overflow
Problem-Type   : local root exploit
Debian-specific: no

Christophe Bailleux reported on bugtraq that Xvt is vulnerable to a
buffer overflow in its argument handling.  Since Xvt is installed
setuid root, it was possible for a normal user to pass
carefully-crafted arguments to xvt so that xvt executed a root shell.

This problem has been fixed by the maintainer in version 2.1-13 of xvt
for Debian unstable and 2.1-13.0potato.1 for the stable Debian
GNU/Linux 2.2.

We recommend that you upgrade your xvt package immediately.

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

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

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


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

  Source archives:

    http://security.debian.org/dists/stable/updates/main/source/xvt_2.1-13.0potato.1.diff.gz
      MD5 checksum: af96d56c54e9cc37c33ad94fce9a046e
    http://security.debian.org/dists/stable/updates/main/source/xvt_2.1-13.0potato.1.dsc
      MD5 checksum: 7d764dc9635c0c0fe71528dbde31ad7e
    http://security.debian.org/dists/stable/updates/main/source/xvt_2.1.orig.tar.gz
      MD5 checksum: 5727ba381c87361431da3a97ab6034c0

  Alpha architecture:

    http://security.debian.org/dists/stable/updates/main/binary-alpha/xvt_2.1-13.0potato.1_alpha.deb
      MD5 checksum: 2c8b053d550288ccae711af15f7c7fa1

  ARM architecture:

    http://security.debian.org/dists/stable/updates/main/binary-arm/xvt_2.1-13.0potato.1_arm.deb
      MD5 checksum: 2c48de17edf03a25f81bdf4fbf680788

  Intel ia32 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-i386/xvt_2.1-13.0potato.1_i386.deb
      MD5 checksum: 3fe8465dac109969c871f264d847d467

  Motorola 680x0 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-m68k/xvt_2.1-13.0potato.1_m68k.deb
      MD5 checksum: ce3fb43ff3245fff81c074e67766573b

  PowerPC architecture:

    http://security.debian.org/dists/stable/updates/main/binary-powerpc/xvt_2.1-13.0potato.1_powerpc.deb
      MD5 checksum: 51aee01c7f2b4cfa9f4a6b1fec1edfb7

  Sun Sparc architecture:

    http://security.debian.org/dists/stable/updates/main/binary-sparc/xvt_2.1-13.0potato.1_sparc.deb
      MD5 checksum: 04c3f9ebcbe1cbfcbdce9fecef1b4d1e


  These files will be moved into the stable distribution on its next
  revision.


Date: Thu, 18 Oct 2001 15:26:02 +0200
From: Martin Schulze 
Subject: [SECURITY] [DSA 083-1] New procmail packages fix insecure signal handling

- --------------------------------------------------------------------------
Debian Security Advisory DSA 083-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
October 18th, 2001
- --------------------------------------------------------------------------

Package        : procmail
Vulnerability  : insecure signal handling
Problem-Type   : local root exploit
Debian-specific: no

Using older versions of procmail it was possible to make procmail
crash by sending it signals.  On systems where procmail is installed
setuid this could be exploited to obtain unauthorized privileges.

This problem has been fixed in version 3.20 by the upstream
maintainer, included in Debian unstable, and was ported back to
version 3.15.2 which is available for for the stable Debian GNU/Linux
2.2.

We recommend that you upgrade your procmail package immediately.

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

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

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


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

  Source archives:

    http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2-1.diff.gz
      MD5 checksum: 0cb94b0c0d122a01f40f121ea0ec6ade
    http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2-1.dsc
      MD5 checksum: 0c197e2629dc5aca44f08a97b94751ad
    http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2.orig.tar.gz
      MD5 checksum: 933c8f378082048f2d7f598dff9b760c


  Alpha architecture:

    http://security.debian.org/dists/stable/updates/main/binary-alpha/procmail_3.15.2-1_alpha.deb
      MD5 checksum: daf60f1b098153e852f2e8404acbf037

  ARM architecture:

    http://security.debian.org/dists/stable/updates/main/binary-arm/procmail_3.15.2-1_arm.deb
      MD5 checksum: 2e1b96787ccb90724db0b0dc97574a9a

  Intel ia32 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-i386/procmail_3.15.2-1_i386.deb
      MD5 checksum: d7245b21110faf119e77705eaf724218

  Motorola 680x0 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-m68k/procmail_3.15.2-1_m68k.deb
      MD5 checksum: f9bf3d4630d57abc6ff876d01174493f

  PowerPC architecture:

    http://security.debian.org/dists/stable/updates/main/binary-powerpc/procmail_3.15.2-1_powerpc.deb
      MD5 checksum: e2713f8a2862ddab38774a1708b85018

  Sun Sparc architecture:

    http://security.debian.org/dists/stable/updates/main/binary-sparc/procmail_3.15.2-1_sparc.deb
      MD5 checksum: 80635f04bd2bbfc991176438307d7371


  These files will be moved into the stable distribution on its next
  revision.

- ---------------------------------------------------------------------------------
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 <pkg>' and http://packages.debian.org/



Date: Thu, 18 Oct 2001 16:16:52 +0200
From: Martin Schulze 
Subject: [SECURITY] [DSA 081-2] No w3m packages for powerpc available

- --------------------------------------------------------------------------
Debian Security Advisory DSA 081-2                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
October 18th, 2001
- --------------------------------------------------------------------------

Packages       : w3m, w3m-ssl
Vulnerability  : Buffer Overflow
Problem-Type   : remote code execution
Debian-specific: no

In SNS Advisory No. 32 a buffer overflow vulnerability has been
reported in the routine which parses MIME headers that are returned
from web servers.  A malicious web server administrator could exploit
this and let the client web browser execute arbitrary code.

We are awfully sorry, but the powerpc version in our announcement DSA
081-1 was built on the wrong distribution (unstable instead of
stable), and thus depended on a wrong version of the glibc.  We had to
remove that file and cannot provide a fixed version.

For the powerpc architecture there is only a very old version of w3m
available.  We recommend that you don't use w3m on the powerpc
distribution.  If you require a text browser please check out links
and lynx which are both good and stable.