5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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
0.003 Low
EPSS
Percentile
70.4%
In the Bouncy Castle JCE Provider version 1.55 and earlier the primary
engine class used for AES was AESFastEngine. Due to the highly table driven
approach used in the algorithm it turns out that if the data channel on the
CPU can be monitored the lookup table accesses are sufficient to leak
information on the AES key being used. There was also a leak in AESEngine
although it was substantially less. AESEngine has been modified to remove
any signs of leakage (testing carried out on Intel X86-64) and is now the
primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine
is now only recommended where otherwise deemed appropriate.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 14.04 | noarch | bouncycastle | < 1.49+dfsg-2ubuntu0.1 | UNKNOWN |
ubuntu | 16.04 | noarch | bouncycastle | < any | UNKNOWN |
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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
0.003 Low
EPSS
Percentile
70.4%