| commit | 552987fdbf4c2bc9641016fd323c3ae5d3a0d9a3 | [log] [tgz] |
|---|---|---|
| author | Katie Hockman <katie@golang.org> | Mon Oct 14 16:42:21 2019 -0400 |
| committer | Katie Hockman <katie@golang.org> | Tue Nov 05 20:21:34 2019 +0000 |
| tree | 7d8e67694cfd94ef61dd6f0299acffe1d8a9309d | |
| parent | 7e71c9c3edbf5b7a8608d6f739c20420a618e0ab [diff] |
crypto/dsa: prevent bad public keys from causing panic dsa.Verify might currently use a nil s inverse in a multiplication if the public key contains a non-prime Q, causing a panic. Change this to check that the mod inverse exists before using it. Fixes CVE-2019-17596 Fixes #34960 Change-Id: I94d5f3cc38f1b5d52d38dcb1d253c71b7fd1cae7 Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/572809 Reviewed-by: Filippo Valsorda <valsorda@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/205441 Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Filippo Valsorda <filippo@golang.org>
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