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UNIRAS Brief - 111/04 - Debian Security Bulletin - New wu-ftpd packages fix multiple vulnerabilities



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 111/04 dated 10.03.04  Time: 11:45  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Debian Security Bulletin:

New wu-ftpd packages fix multiple vulnerabilities.


Detail
====== 

Two vulnerabilities were discovered in wu-ftpd:

CAN-2004-0148 - Glenn Stewart discovered that users could bypass the directory 
access restrictions imposed by the restricted-gid option by changing the permissions 
on their home directory. On a subsequent login, when access to the user's home 
directory was denied, wu-ftpd would fall back to the root directory.

CAN-2004-0185 - A buffer overflow existed in wu-ftpd's code which deals with 
S/key authentication.

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- - - --------------------------------------------------------------------------
Debian Security Advisory DSA 457-1                     security@xxxxxxxxxx
http://www.debian.org/security/                             Matt Zimmerman
March 8th, 2004                         http://www.debian.org/security/faq
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Package        : wu-ftpd
Vulnerability  : several
Problem-Type   : remote
Debian-specific: no
CVE Ids        : CAN-2004-0148 CAN-2004-0185

Two vulnerabilities were discovered in wu-ftpd:

 CAN-2004-0148 - Glenn Stewart discovered that users could bypass the  directory access restrictions imposed by the restricted-gid option by  changing the permissions on their home directory.  On a subsequent  login, when access to the user's home directory was denied, wu-ftpd  would fall back to the root directory.

 CAN-2004-0185 - A buffer overflow existed in wu-ftpd's code which  deals with S/key authentication.

For the stable distribution (woody) these problems have been fixed in version 2.6.2-3woody4.

For the unstable distribution (sid) these problems have been fixed in version 2.6.2-17.1.

We recommend that you update your wu-ftpd package.

Upgrade Instructions
- - - --------------------

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 3.0 alias woody
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  Source archives:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4.dsc
      Size/MD5 checksum:      607 ced69dc6017f9afd9ea2e993e5570084
    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4.diff.gz
      Size/MD5 checksum:   100777 399c02a6d064f2aef676fba75db3964a
    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2.orig.tar.gz
      Size/MD5 checksum:   354784 b3c271f02aadf663b8811d1bff9da3f6

  Architecture independent components:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd-academ_2.6.2-3woody4_all.deb
      Size/MD5 checksum:     3482 ef0f9788eecfa4290bbcea8e259b48e2

  Alpha architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_alpha.deb
      Size/MD5 checksum:   291786 5d9f21b554fc210956d2e46e7e817bc8

  ARM architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_arm.deb
      Size/MD5 checksum:   265480 0820e29ec495c37629c79018bab2d267

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_i386.deb
      Size/MD5 checksum:   257234 be096867b80cd54f46e3ce5615886537

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_ia64.deb
      Size/MD5 checksum:   321396 9042bd62637c9a38469681de0711e39a

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_hppa.deb
      Size/MD5 checksum:   276170 61272ad0cb9bd68cfbe55c1ec68109b1

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_m68k.deb
      Size/MD5 checksum:   249496 54ac511d90b1082fed2528e412ddd913

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_mips.deb
      Size/MD5 checksum:   273044 07acbf48ee5b459af762f48df3c8cf81

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_mipsel.deb
      Size/MD5 checksum:   273172 ca3dd63e1f9340605cdd1bc71bf70698

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_powerpc.deb
      Size/MD5 checksum:   268476 6a8df56549ab599125d5bc627ac0d51d

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_s390.deb
      Size/MD5 checksum:   263268 aa81a92d47b93214ccbedba1e1871e4e

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody4_sparc.deb
      Size/MD5 checksum:   270514 9f6ddd158ba0cc9bd778ba8dfc3d75db

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

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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@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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UNIRAS wishes to acknowledge the contributions of Debian for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

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and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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