** Changed in: cyrus-sasl2 (Ubuntu Jammy)
Assignee: (unassigned) => Andreas Hasenack (ahasenack)
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https://bugs.launchpad.net/bugs/1988730
Title:
package libsasl2-modules provides only unsafe SASL bind mechanims
Status in cyrus-sasl2 package in Ubuntu:
Fix Released
Status in cyrus-sasl2 source package in Jammy:
Triaged
Bug description:
Current Cyrus libsasl2 packaging (Ubuntu Jammy) distributes SASL bind
mechanims into different packages. Plained and shared secret mechanisms are
provided by package libsasl2-modules:
/usr/lib/x86_64-linux-gnu/sasl2/libanonymous.so
/usr/lib/x86_64-linux-gnu/sasl2/libanonymous.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libanonymous.so.2.0.25
/usr/lib/x86_64-linux-gnu/sasl2/libcrammd5.so
/usr/lib/x86_64-linux-gnu/sasl2/libcrammd5.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libcrammd5.so.2.0.25
/usr/lib/x86_64-linux-gnu/sasl2/libdigestmd5.so
/usr/lib/x86_64-linux-gnu/sasl2/libdigestmd5.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libdigestmd5.so.2.0.25
/usr/lib/x86_64-linux-gnu/sasl2/liblogin.so
/usr/lib/x86_64-linux-gnu/sasl2/liblogin.so.2
/usr/lib/x86_64-linux-gnu/sasl2/liblogin.so.2.0.25
/usr/lib/x86_64-linux-gnu/sasl2/libntlm.so
/usr/lib/x86_64-linux-gnu/sasl2/libntlm.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libntlm.so.2.0.25
/usr/lib/x86_64-linux-gnu/sasl2/libplain.so
/usr/lib/x86_64-linux-gnu/sasl2/libplain.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libplain.so.2.0.25
The "safest" mechanism in this list is DIGEST-MD5, which is marked as
obsolete by IANA and regarded as unsafe by IETF. Current safest
standard mechanisms are SCRAM based (RFC7677).
All SCRAM family SASL mechanisms of Cyrus SASL are provided by Ubuntu package
libsasl2-modules-gssapi-mit:
/usr/lib/x86_64-linux-gnu/sasl2/libscram.so
/usr/lib/x86_64-linux-gnu/sasl2/libscram.so.2
/usr/lib/x86_64-linux-gnu/sasl2/libscram.so.2.0.25
But the focus of this package is GSSAPI and GS2 SASL mechanism, which
have nothing to do with SCRAM. In addition, this package conflicts
with package libsasl2-modules-gssapi-heimdal. System administrators
have to choose one package for support of GSSAPI or GSS-SPEGNO. If
they prefer Heimdal there is no safe SASL shared secret mechanism
available anymore on the server/workstation.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cyrus-sasl2/+bug/1988730/+subscriptions
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