This side-channel attack requires that the attacker can run arbitrary software on the hardware where the private RSA key is used. Allowing execute access to a box with private keys should be considered as an unsafe security practice, anyway. Thus in practice there are easier ways to access the private keys than to mount this side-channel attack. However, on boxes with virtual machines this attack may be used by one VM to steal private keys from another VM.
CVSS v3 metrics
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
|CVSS3 Base Score||6.1|
|CVSS3 Base Metrics||CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N|
Affected Packages State
|Red Hat Enterprise Linux 7||libgcrypt||Will not fix|
|Red Hat Enterprise Linux 6||libgcrypt||Will not fix|
|Red Hat Enterprise Linux 5||libgcrypt||Will not fix|
|RHEV Manager 3||mingw-virt-viewer||Will not fix|
AcknowledgementsRed Hat would like to thank the Libgcrypt project for reporting this issue.
CVE description copyright © 2017, The MITRE Corporation