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FreeBSD: VID-7762D7AD-2E38-41D2-9785-C51F653BA8BD (CVE-2018-12435): botan2 -- ECDSA side channel

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FreeBSD: VID-7762D7AD-2E38-41D2-9785-C51F653BA8BD (CVE-2018-12435): botan2 -- ECDSA side channel

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
06/13/2018
Created
03/19/2019
Added
08/18/2018
Modified
05/07/2019

Description

Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Solution(s)

  • freebsd-upgrade-package-botan2

References

  • CVE-2018-12435

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