Lucene search

K
redhatcveRedhat.comRH:CVE-2020-28052
HistoryJan 05, 2021 - 2:33 p.m.

CVE-2020-28052

2021-01-0514:33:33
redhat.com
access.redhat.com
18

8.1 High

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.006 Low

EPSS

Percentile

77.1%

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&gt;) into their own utility class and supplement it with the required methods and variables as required

8.1 High

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.006 Low

EPSS

Percentile

77.1%

Related for RH:CVE-2020-28052