Botan 1.8.13 has been released with a fix for a recently discovered bug that could cause crashes in multithreaded code.

A full description of the problem can be found on the mailing list: http://lists.randombit.net/pipermail/botan-devel/2011-July/001455.html

Update to the latest version of the 1.8 series, 1.8.12.

Relevant items from the upstream changelog:

• If EMSA3(Raw) was used for more than one signature, it would produce incorrect output.
• Fix a memory leak in the constructors of DataSource_Stream and DataSink_Stream which would occur if opening the file failed. PR 144

See http://botan.randombit.net/log.html#version-1-8-12-2011-06-20.