Alerts This Week
Warning Icon 1 764
Alerts This Week
Warning Icon 1 764

Debian 2.2: DSA-009-1 Moderate: Stunnel Insecure File Handling Issues

debian
Calendar Grey December 24, 2000
Debian Logo
Exposed file handling and formatting discrepancies discovered in earlier stunnel versions. Instituted remedial steps disseminated for Debian users.
Insecure file handling and format string bugs are present in previous versions of stunnel

Summary

Package : stunnel
Problem type : insecure file handling, format string bug
Debian-specific: no

Lez discovered a format string problem in stunnel (a tool to create
Universal SSL tunnel for other network daemons). Brian Hatch
responded by stating he was already preparing a new release with
multiple security fixes:

1. the PRNG (pseudo-random generated) was not seeded correctly.
This only affects operation on operating systems without a
secure random generator (like Linux)
2. Pid files were not created securely, making stunnel vulnerable
to a symlink attack
3. There was an insecure syslog() call which could be exploited if
the user could manage to insert text into the logged text. At
least one way to exploit this using faked identd responses was
demonstrated by Lez.

These problems have been fixed in version 3.10-0potato1.

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 fo...

Read the Full Advisory

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here