subversion -- heap overflow vulnerability

A Subversion Security Advisory reports:

Subversion clients and servers have multiple heap
overflow issues in the parsing of binary deltas. This is
related to an allocation vulnerability in the APR library
used by Subversion.
Clients with commit access to a vulnerable server can
cause a remote heap overflow; servers can cause a heap
overflow on vulnerable clients that try to do a checkout
or update.
This can lead to a DoS (an exploit has been tested) and
to arbitrary code execution (no exploit tested, but the
possibility is clear).