Vulnerability identifier: #VU49086
Vulnerability risk: High
Exploitation vector: Network
Exploit availability: Yes
Vendor: Legion of the Bouncy Castle Inc.
The 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.
Install updates from vendor's website.
Vulnerable software versions
The Bouncy Castle Crypto Package For Java: 1.65 - 1.66
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?