Prevent a double free by not reentering be_tls_close().
Reentering this function with the right timing caused a double free,
typically crashing the backend. By synchronizing a disconnection with
the authentication timeout, an unauthenticated attacker could achieve
this somewhat consistently. Call be_tls_close() solely from within
proc_exit_prepare(). Back-patch to 9.0 (all supported versions).
Benkocs Norbert Attila
Security: CVE-2015-3165
Branch
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REL9_2_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/439ff9b6b9de435e1c92d05221cfbcb7ff80e150
Modified Files
--------------
src/backend/libpq/be-secure.c | 5 -----
src/backend/libpq/pqcomm.c | 23 ++++++++++++++++++-----
src/backend/postmaster/postmaster.c | 11 ++++++++++-
3 files changed, 28 insertions(+), 11 deletions(-)