Medium severity · published Dec 13, 2017
CVE-2017-13098
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…
5.9
CVSS
24.3%
EPSS
No
On KEV
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."
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)24.3% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bc-java · Bouncycastle
before 1.59 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-13098
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-13098
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00011.html
Issue Tracking
http://www.kb.cert.org/vuls/id/144389
Third Party Advisory
http://www.securityfocus.com/bid/102195
Issue Tracking
https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c
Issue Tracking
https://robotattack.org/
Issue Tracking
https://security.netapp.com/advisory/ntap-20171222-0001/
More from Bc-java
9.8
CVE-2018-1000613
Legion of the Bouncy Castle Legion of the Bouncy Castle Java Cryptography APIs 1.58 up to but not including 1.60 contains a CWE-470: Use of Externally-Controlled Input to Select…
9.1
CVE-2026-58062
Stapled OCSP response accepted without binding to the checked certificate
9.1
CVE-2026-59650
MTI/A0 DH agreement exponentiates unvalidated peer value
9.1
CVE-2026-8763
Name Constraints bypass via trailing dot in rfc822Name and URI
8.6
CVE-2026-12817
OpenPGP AEAD decryption skips final tag on chunk-aligned data