Scientific Linux Security Update : cyrus-sasl on SL4.x, SL3.x i386/x86_64
Low Nessus Plugin ID 60245
SynopsisThe remote Scientific Linux host is missing one or more security updates.
DescriptionA bug was found in cyrus-sasl's DIGEST-MD5 authentication mechanism.
As part of the DIGEST-MD5 authentication exchange, the client is expected to send a specific set of information to the server. If one of these items (the 'realm') was not sent or was malformed, it was possible for a remote unauthenticated attacker to cause a denial of service (segmentation fault) on the server. (CVE-2006-1721)
This errata also fixes the following bugs in Scientific Linux 4 :
- the Kerberos 5 library included in Red Hat Enterprise Linux 4 was not thread safe. This update adds functionality which allows it to be used safely in a threaded application.
- several memory leak bugs were fixed in cyrus-sasl's DIGEST-MD5 authentication plug-in.
- /dev/urandom is now used by default on systems which don't support hwrandom. Previously, dev/random was the default.
- cyrus-sasl needs zlib-devel to build properly. This dependency information is now included in the package.
SolutionUpdate the affected packages.