THREATPORT/VULNERABILITY/CVE-2017-13098
HIGH SEVERITY

CVE-2017-13098

Bc Java vulnerability

CVSS
7.5
EPSS
24.3%
EPSS pct
98th
Exploited
No known
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."
Affected vendor
Bouncycastle
Affected product
Bc Java
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2017-12-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 24.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2017-13098

  • Confirm whether Bouncycastle Bc Java is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-13098.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-13098

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-13098 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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