Date: Thu, 7 Aug 2003 15:24:39 +0200
From: Trustix Secure Linux Advisor <[email protected]>
To: [email protected]Subject: TSLSA-2003-0030 - stunnel
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Trustix Secure Linux Security Advisory #2003-0030
Package name: stunnel
Summary: Denial of service
Date: 2003-08-07
Affected versions: TSL 1.2, 1.5
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Package description:
stunnel is a socket wrapper which can be used to give ordinary
applications SSL (secure sockets layer) support. For example, it
can be used in conjunction with a imapd to create a SSL secure IMAP
server.
Problem description:
Stunnel prior to 3.25 and 4.04 has an error in the SIGCHILD handling
code which could lead to a denial of service attack if the child
processes were terminated too fast.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All TSL updates are available from
<URI:http://www.trustix.net/pub/Trustix/updates/>;
<URI:ftp://ftp.trustix.net/pub/Trustix/updates/>;
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Users of TSL 1.2 can get SWUP from:
<URI:ftp://ftp.trustix.net/pub/Trustix/software/swup/>;
(In later versions of TSL, SWUP is included in the default installation.)
Public testing:
These packages have been available for public testing for some time.
If you want to contribute by testing the various packages in the
testing tree, please feel free to share your findings on the
tsl-discuss mailinglist.
The testing tree is located at
<URI:http://www.trustix.net/pub/Trustix/testing/>;
<URI:ftp://ftp.trustix.net/pub/Trustix/testing/>;
Questions?
Check out our mailing lists:
<URI:http://www.trustix.net/support/>;
Verification:
This advisory along with all TSL packages are signed with the TSL sign key.
This key is available from:
<URI:http://www.trustix.net/TSL-GPG-KEY>;
The advisory itself is available from the errata pages at
<URI:http://www.trustix.net/errata/trustix-1.2/>;,
<URI:http://www.trustix.net/errata/trustix-1.5/>;
or directly at
<URI:http://www.trustix.net/errata/misc/2003/TSL-2003-0030-stunnel.asc.txt>;
MD5sums of the packages:
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0f3e975d06638f7b07f1ff6d96858bd1 ./1.2/SRPMS/stunnel-3.25-1tr.src.rpm
35b28a96f35dba5fc9c4dfc6866b9f98 ./1.2/RPMS/stunnel-3.25-1tr.i586.rpm
ab593de4efa5159423fafd3a8a08a791 ./1.5/RPMS/stunnel-3.25-1tr.i586.rpm
0f3e975d06638f7b07f1ff6d96858bd1 ./1.5/SRPMS/stunnel-3.25-1tr.src.rpm
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Trustix Security Team
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