Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-28052 |
CWE-ID | CWE-1025 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software |
The Bouncy Castle Crypto Package For Java Universal components / Libraries / Libraries used by multiple products |
Vendor | Legion of the Bouncy Castle Inc. |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU49086
Risk: High
CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2020-28052
CWE-ID:
CWE-1025 - Comparison using wrong factors
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to brute-force password hashes.
The vulnerability exists due to comparison error in OpenBSDBCrypt.checkPassword() function in core/src/main/java/org/bouncycastle/crypto/generators/OpenBSDBCrypt.java when matching passwords with hashes. A remote attacker can pass an incorrect password that will be accepted as a valid one by the library, bypass authentication process and gain unauthorized access to the application that uses vulnerable version of Bouncy Castle.
MitigationInstall updates from vendor's website.
Vulnerable software versionsThe Bouncy Castle Crypto Package For Java: 1.65 - 1.66
CPE2.3http://github.com/bcgit/bc-java/wiki/CVE-2020-28052
http://www.bouncycastle.org/releasenotes.html
http://www.synopsys.com/blogs/software-security/cve-2020-28052-bouncy-castle/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.