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Debian Security Advisory DSA 009-1 (stunnel)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to stunnel announced via advisory DSA 009-1.
Insight
Insight
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.
Solution
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20009-1