Vulnerability CVE-2017-13098
Published: 2017-12-12   Modified: 2017-12-13

Description:
BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as "ROBOT."

Type:

CWE-203

 (Information Exposure Through Discrepancy)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Bouncycastle -> Legion-of-the-bouncy-castle-c#-cryptography-api 
Bouncycastle -> Legion-of-the-bouncy-castle-java-crytography-api 

 References:
http://www.kb.cert.org/vuls/id/144389
http://www.securityfocus.com/bid/102195
https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c
https://robotattack.org/
https://security.netapp.com/advisory/ntap-20171222-0001/
https://www.debian.org/security/2017/dsa-4072
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