FreeBSD: VID-D8E7E854-17FA-11E9-BEF6-6805CA2FA271 (CVE-2018-20187): botan2 -- Side channel during ECC key generation
|4||(AV:L/AC:M/Au:N/C:P/I:P/A:P)||December 17, 2018||January 28, 2019||January 28, 2019|
Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
botan2 developers reports:
A timing side channel during ECC key generation could leak information about the
high bits of the secret scalar. Such information allows an attacker to perform a
brute force attack on the key somewhat more efficiently than they would otherwise.
Found by Ján Jančár using ECTester.
Bug introduced in 1.11.20, fixed in 2.9.0
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