5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.004 Low
EPSS
Percentile
69.2%
Evgeny Sidorov discovered that it is possible to recover the private key
when using Rabin-Williams signatures due to a bad interaction with the
blinding value used to mask private key operations. The bad interaction
had to do with the random value not meeting certain Jacobi requirements,
which allows remote attackers to obtain private keys via a timing attack.