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Fencer Vulns
high 7.5

CVE-2017-13098 in the critical feed json

BouncyCastle JCE TLS Bleichenbacher/ROBOT

published 2017-12-13 8 y ago modified 2026-06-17 4 mo ago also GHSA-wrwf-pmmj-w989 , EUVD-2022-5636

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
24.3%
EPSS 24.3% chance of exploitation in 30 days, percentile 97%
public exploits
1
Metasploit

Summary

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."

Patch / fix

  • maven org.bouncycastle:bcprov-jdk15on 1.0.3
  • bouncycastle bc-java 1.59
  • bouncycastle Debian 14, Debian 13, Debian 12 1.58-1

debian advisories DEBIAN-CVE-2017-13098

  • bouncycastle openSUSE Tumbleweed 1.68-3.2
  • bouncycastle openSUSE Leap 15.1 1.60-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:10661-1openSUSE-SU-2020:0607-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-13098 updated cvss 6.5

bouncycastle: TLS server vulnerable to Adaptive Chosen Ciphertext attack when using JCE allowing plaintext recovery or MITM attack

  • Red Hat Satellite 6 bouncycastle
    affected: no fix available
  • Red Hat Subscription Asset Manager bouncycastle
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Data Grid 7 bouncycastle bouncycastle Red Hat JBoss Data Virtualization 6 bouncycastle bouncycastle Red Hat JBoss Enterprise Application Platform 7 bouncycastle bouncycastle Red Hat Single Sign-On 7 bouncycastle bouncycastle Red Hat Software Collections rh-eclipse46-bouncycastle, rh-eclipse46-bouncycastle-javadoc Red Hat Virtualization 4 eap7-bouncycastle
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (Metasploit auxiliary/scanner/ssl/bleichenbacher_oracle)
  2. Published

Exploit prediction

24.28% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.bouncycastle:bcprov-jdk15on
<1.0.3
1.0.3

Affected products

  • Legion of the Bouncy Castle BouncyCastle TLS

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.