Red Hat: two 'gnupg' vulnerabilities
Posted by LinuxSecurity.com Team   
RedHat Linux Updated gnupg packages are now available for Red Hat Linux 6.x and 7.

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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated gnupg packages now available
Advisory ID:       RHSA-2000:131-02
Issue date:        2000-12-19
Updated on:        2000-12-19
Product:           Red Hat Linux
Keywords:          gnupg secret-key web-of-trust detached-signature
Cross references:  
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1. Topic:

Updated gnupg packages are now available for Red Hat Linux 6.x and 7.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

3. Problem description:

When importing keys from public key servers, GnuPG will import private keys
(also known as secret keys) in addition to public keys. If this happens,
the user's web of trust becomes corrupted. Additionally, when used to check
detached signatures, if the data file being checked contained clearsigned
data, GnuPG would not warn the user if the detached signature was
incorrect.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):

21889 - Web of trust circumvention by secret key distribution
21498 - Detached signature verification vulnerability

6. RPMs required:

Red Hat Linux 6.2:

SRPMS: 
ftp://updates.Red Hat.com//6.2/SRPMS/gnupg-1.0.4-8.6.x.src.rpm

alpha: 
ftp://updates.Red Hat.com//6.2/alpha/gnupg-1.0.4-8.6.x.alpha.rpm

i386: 
ftp://updates.Red Hat.com//6.2/i386/gnupg-1.0.4-8.6.x.i386.rpm

sparc: 
ftp://updates.Red Hat.com//6.2/sparc/gnupg-1.0.4-8.6.x.sparc.rpm

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com//7.0/SRPMS/gnupg-1.0.4-8.6.x.src.rpm 
ftp://updates.Red Hat.com//7.0/SRPMS/gnupg-1.0.4-9.src.rpm

alpha: 
ftp://updates.Red Hat.com//7.0/alpha/gnupg-1.0.4-9.alpha.rpm

i386: 
ftp://updates.Red Hat.com//7.0/i386/gnupg-1.0.4-9.i386.rpm



7. Verification:

MD5 sum                           Package Name
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aae767039effc37d4a929428e0d19543  6.2/alpha/gnupg-1.0.4-8.6.x.alpha.rpm
 887b2d7d888fb8ee84c81cee7832384e  6.2/i386/gnupg-1.0.4-8.6.x.i386.rpm
 d7a3124166bc5c35cd3ca2dec36c97e0  6.2/sparc/gnupg-1.0.4-8.6.x.sparc.rpm
 1f476ae8f5453655a4a61174de187d15  7.0/alpha/gnupg-1.0.4-9.alpha.rpm
 88ac7d34da177b6c469e0f2a0f6117e6  7.0/i386/gnupg-1.0.4-9.i386.rpm
 5e454eb08ce03f26eccbf7007026cd56  6.2/SRPMS/gnupg-1.0.4-8.6.x.src.rpm
 4e81b35255980b0884e2f1ae3cf026d5  7.0/SRPMS/gnupg-1.0.4-9.src.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/corp/contact.html

You can verify each package with the following command:
    rpm --checksig  

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg 

8. References:
 
ftp://ftp.gnupg.org/pub/gcrypt/gnupg/gnupg-1.0.4.security-patch1.diff 
http://lists.gnupg.org/gnupg-devel-200012/msg00026.html 
http://lists.gnupg.org/gnupg-devel-200012/msg00028.html


Copyright(c) 2000 Red Hat, Inc.