Redhat.comRH:CVE-2020-28052CVE-2020-28052
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
74.4%
A flaw was found in bouncycastle. The OpenBSDBCrypt.checkPassword utility method compared incorrect data when checking the password allowing incorrect passwords to indicate they were matching with previously hashed ones that were different. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Mitigation
Users unable to upgrade to version 1.67 or greater can copy the OpenBSDBCrypt.doCheckPassword() method implementation (<https://github.com/bcgit/bc-java/blob/r1rv67/core/src/main/java/org/bouncycastle/crypto/generators/OpenBSDBCrypt.java#L259-L343>) into their own utility class and supplement it with the required methods and variables as required
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
74.4%