Buffer overflow in Sun Java System Web Server 7.0 Update 6 has unspecified impact and remote attack vectors, as demonstrated by the vdsjws module in VulnDisco Pack Professional 8.12. NOTE: as of 20091105, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.

Intevydis reported a buffer overflow in PostgreSQL's implementation of substring() function when called with negative length argument:

http://intevydis.blogspot.com/2010/01/postgresql-8023-bitsubstr-overflow.html

Following query triggers overflow / crash:

select substring(B'10101010101010101010101010101010101010101010101',33,-15);