PT-2020-16912 · Legion Of The Bouncy Castle · Legion Of The Bouncy Castle Bc
Published
2020-12-18
·
Updated
2024-06-15
·
CVE-2020-28052
CVSS v3.1
8.1
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Legion of the Bouncy Castle BC Java versions 1.65 through 1.66
Description
An issue was discovered in the OpenBSDBCrypt.checkPassword utility method, which compared incorrect data when checking the password. This allowed incorrect passwords to indicate they were matching with previously hashed ones that were different. The vulnerability can be exploited to bypass authentication, potentially giving an attacker access to user or admin accounts. It is estimated that 20% of passwords can be cracked with the first thousand attempts.
Recommendations
For versions 1.65 and 1.66, update to version 1.67 or later to resolve the issue.
As a temporary workaround, consider restricting access to sensitive areas of the application until the update can be applied.
Exploit
Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Legion Of The Bouncy Castle Bc