-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
             AUSCERT External Security Bulletin Redistribution

            ESB-2001.254 -- Debian Security Advisory DSA-061-1
                          Multiple GnuPG Problems
                               26 June 2001

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                GnuPG
Vendor:                 Debian
Operating System:       Debian GNU/Linux 2.2
Platform:               Alpha
                        ARM
                        i386
                        m68k
                        PowerPC
                        Sparc
Impact:                 Execute Arbitrary Code/Commands
                        Reduced Security
Access Required:        Remote

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----

- - ------------------------------------------------------------------------
Debian Security Advisory DSA-061-1                   security@debian.org
http://www.debian.org/security/                         Wichert Akkerman
June 16, 2001
- - ------------------------------------------------------------------------


Package        : gnupg
Problem type   : printf format attack
                 web of trust pollution
Debian-specific: no

The version of GnuPG (GNU Privacy Guard, an OpenPGP implementation)
as distributed in Debian GNU/Linux 2.2 suffers from two problems:

fish stiqz reported on bugtraq that there was a printf format
problem in the do_get() function: it printed a prompt which included
the filename that was being decrypted without checking for
possible printf format attacks. This could be exploited by tricking
someone into decrypting a file with a specially crafted filename.

The second bug is related to importing secret keys: when gnupg
imported a secret key it would immediately make the associated
public key fully trusted which changes your web of trust without
asking for a confirmation. To fix this you now need a special
option to import a secret key.

Both problems have been fixed in version 1.0.6-0potato1.

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


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

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

  Source archives:
    http://security.debian.org/dists/stable/updates/main/source/gnupg_1.0.6-0potato1.diff.gz
      MD5 checksum: 4928a4a589c11cadea852347d23edf5a
    http://security.debian.org/dists/stable/updates/main/source/gnupg_1.0.6-0potato1.dsc
      MD5 checksum: e6057febed9106dfc9f77fb61fbd0ca4
    http://security.debian.org/dists/stable/updates/main/source/gnupg_1.0.6.orig.tar.gz
      MD5 checksum: 7c319a9e5e70ad9bc3bf0d7b5008a508

  Alpha architecture:
    http://security.debian.org/dists/stable/updates/main/binary-alpha/gnupg_1.0.6-0potato1_alpha.deb
      MD5 checksum: 76c3f586b91bba1c69a6fb6ea93a2fbd

  ARM architecture:
    http://security.debian.org/dists/stable/updates/main/binary-arm/gnupg_1.0.6-0potato1_arm.deb
      MD5 checksum: 84a47897a38f44b07180e9a9ec16ab49

  Intel IA-32 architecture:
    http://security.debian.org/dists/stable/updates/main/binary-i386/gnupg_1.0.6-0potato1_i386.deb
      MD5 checksum: d3a91ccc9d1c951b80afe17e59190db3

  Motorola 680x0 architecture:
    http://security.debian.org/dists/stable/updates/main/binary-m68k/gnupg_1.0.6-0potato1_m68k.deb
      MD5 checksum: 6b12f23b3c3840574af826db147ed9cd

  PowerPC architecture:
    http://security.debian.org/dists/stable/updates/main/binary-powerpc/gnupg_1.0.6-0potato1_powerpc.deb
      MD5 checksum: a5a9bffdce2abf112c2058097f48f784

  Sun Sparc architecture:
    http://security.debian.org/dists/stable/updates/main/binary-sparc/gnupg_1.0.6-0potato1_sparc.deb
      MD5 checksum: 487c0d605ff5b3fdce2212d4e9c07bf0

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

For not yet released architectures please refer to the appropriate
directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .

- - -- 
- - ----------------------------------------------------------------------------
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

- -----BEGIN PGP SIGNATURE-----
Version: 2.6.3ia
Charset: noconv

iQB1AwUBOyud7KjZR/ntlUftAQGn2AL9EYSvg7znskCLx5eY/mOjz3QQnDSEFXlj
V8GSUZaSVpm5kNcb19pZIgfJEZe60CQIDesdnb8M7YaKyT65sFha+8yJvaVWsy+H
5Mp/lBEW8B3qvNYtScF6/XoXKpymOD2E
=918n
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content.  The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBOziCqSh9+71yA2DNAQFZWQP8CpzqndB5gAivRRrAYMRY8W6CJs0THWTq
i0b/rA87Ze+JvkCT3xMJ2U8oXp0j8FATDML0gx0yshdomlYE+2zkbheUxhfXBE2z
M2PZRTGXxb4SD7EDk55Xdui9pPE3ug9/72bFE33ozGkLkign6/aT13ikGKrKTjXK
qxzuJus9brY=
=xD+6
-----END PGP SIGNATURE-----