d5f2dc6a5c
If beta8 is unusually large, the addition loop might take a very long time to bring x3-beta8 back positive. This would lead to a DoS vulnerability in the implementation of the P-521 and P-384 elliptic curves that may let an attacker craft inputs to ScalarMult that consume excessive amounts of CPU. This fixes CVE-2019-6486. Change-Id: Ia969e8b5bf5ac4071a00722de9d5e4d856d8071a Reviewed-on: https://team-review.git.corp.google.com/c/399777 Reviewed-by: Adam Langley <agl@google.com> Reviewed-by: Julie Qiu <julieqiu@google.com> (cherry picked from commit 746d6abe2dfb9ce7609f8e1e1a8dcb7e221f423e) Reviewed-on: https://team-review.git.corp.google.com/c/401143 Reviewed-by: Filippo Valsorda <valsorda@google.com> |
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The Go Programming Language
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