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(parent: 6f8b6ab) | patch
Prevent a double free by not reentering be_tls_close().
authorNoah Misch <noah@leadboat.com>
Mon, 18 May 2015 14:02:31 +0000 (10:02 -0400)
committerNoah Misch <noah@leadboat.com>
Mon, 18 May 2015 14:02:37 +0000 (10:02 -0400)
commit439ff9b6b9de435e1c92d05221cfbcb7ff80e150
tree56195bd242f119e88858faf3fd128cf8ae88dda0tree | snapshot
parent6f8b6abd97711ea4f5f4f7bf92d93d32156e15d4commit | diff
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
src/backend/libpq/be-secure.c diff | blob | blame | history
src/backend/libpq/pqcomm.c diff | blob | blame | history
src/backend/postmaster/postmaster.c diff | blob | blame | history
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