Thread: pgsql: Fix integer-overflow problem in scram_SaltedPassword()

Fix integer-overflow problem in scram_SaltedPassword()

Setting the iteration count for SCRAM secret generation to INT_MAX
will cause an infinite loop in scram_SaltedPassword() due to integer
overflow, as the loop uses the "i <= iterations" comparison.  To fix,
use "i < iterations" instead.

Back-patch to v16 where the user-settable GUC scram_iterations has
been added.

Author: Kevin K Biju <kevinkbiju@gmail.com>
Reviewed-by: Richard Guo <guofenglinux@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CAM45KeEMm8hnxdTOxA98qhfZ9CzGDdgy3mxgJmy0c+2WwjA6Zg@mail.gmail.com

Branch
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REL_16_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/de1484736dbef86a1b0b92544030ae655b1b2af3

Modified Files
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src/common/scram-common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)