Information disclosure in Bouncy Castle

Published: 2017-12-13 | Updated: 2020-05-04
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-13098
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 low risk vulnerability.

1) Information disclosure


Risk: Low


CVE-ID: CVE-2017-13098


Exploit availability:


The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to the application is susceptible to a chosen ciphertext attack when negotiating an RSA key exchange for any TLS cipher suite. A remote attacker can conduct man-in-the-middle attack and decrypt HTTPS traffic or impersonate the HTTPS server.


Update to version 1.0.3.

Vulnerable software versions

The Bouncy Castle Crypto Package For Java: 1.58

Fixed software versions

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?