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CVE-2018-1000613: Legion of the Bouncy Castle Legion of the Bouncy Castle Java Cryptography APIs 1.58 up to but not including 1.

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CRITICAL 9.8REMOTEUPGRADEMITIGATEMITIGATE

CVE-2018-1000613 is a critical-severity flaw (CVSS 9.8) affecting bc-java, oncommand workflow automation, leap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 Classes or Code ('Unsafe Reflection') vulnerability in XMSS/XMSS^MT private key deserialization that can result in Deserializing an XMSS/XMSS^MT private key can result in the execution of unexpected code. This attack appear to be exploitable via A handcrafted private key

Why this priority

  • Critical severity
  • EPSS top 8%: very likely to be exploited
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance4.8% (top 8%)
CISA exploited listNo
WeaknessCWE-470
Published2018-07-09
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: bouncycastle · netapp · opensuse · oracle

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

bouncycastle bc-java UPGRADE
Affected: >= 1.58 and < 1.60
Fixed in: 1.60
Safe to downgrade to: a release before 1.58
1. Check installed version
apt-cache policy bc-java || rpm -q bc-java || bc-java --version
2. UPGRADE to 1.60 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade bc-java
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade bc-java
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 1.58 (Debian / Ubuntu)
apt-cache madison bc-java sudo apt install bc-java=<VERSION_BEFORE_1.58> sudo apt-mark hold bc-java
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list bc-java sudo dnf downgrade bc-java-<VERSION_BEFORE_1.58> sudo dnf versionlock add bc-java
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
netapp oncommand workflow automation MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy oncommand-workflow-automation || rpm -q oncommand-workflow-automation || oncommand-workflow-automation --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
opensuse leap MITIGATE
Affected: 15.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 15.1
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
oracle api gateway DOWNGRADE
Affected: 11.1.2.4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 11.1.2.4.0
1. Check installed version
apt-cache policy api-gateway || rpm -q api-gateway || api-gateway --version
2. No fixed release: DOWNGRADE to a release before 11.1.2.4.0 (Debian / Ubuntu)
apt-cache madison api-gateway sudo apt install api-gateway=<VERSION_BEFORE_11.1.2.4.0> sudo apt-mark hold api-gateway
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list api-gateway sudo dnf downgrade api-gateway-<VERSION_BEFORE_11.1.2.4.0> sudo dnf versionlock add api-gateway
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
oracle banking platform DOWNGRADE
Affected: 2.6.0 · 2.6.1 · 2.6.2
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.6.0
1. Check installed version
apt-cache policy banking-platform || rpm -q banking-platform || banking-platform --version
2. No fixed release: DOWNGRADE to a release before 2.6.0 (Debian / Ubuntu)
apt-cache madison banking-platform sudo apt install banking-platform=<VERSION_BEFORE_2.6.0> sudo apt-mark hold banking-platform
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list banking-platform sudo dnf downgrade banking-platform-<VERSION_BEFORE_2.6.0> sudo dnf versionlock add banking-platform
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
oracle business process management suite DOWNGRADE
Affected: 11.1.1.9.0 · 12.1.3.0.0 · 12.2.1.3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 11.1.1.9.0
1. Check installed version
apt-cache policy business-process-management-suite || rpm -q business-process-management-suite || business-process-management-suite --version
2. No fixed release: DOWNGRADE to a release before 11.1.1.9.0 (Debian / Ubuntu)
apt-cache madison business-process-management-suite sudo apt install business-process-management-suite=<VERSION_BEFORE_11.1.1.9.0> sudo apt-mark hold business-process-management-suite
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list business-process-management-suite sudo dnf downgrade business-process-management-suite-<VERSION_BEFORE_11.1.1.9.0> sudo dnf versionlock add business-process-management-suite
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-1000613?

bc-java: upgrade to 1.60; oncommand workflow automation: mitigate or apply the listed mitigation; leap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-1000613 being exploited?

CVE-2018-1000613 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-1000613 affect?

CVE-2018-1000613 affects bc-java, oncommand workflow automation, leap. Severity is critical (CVSS 9.8). 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 Classes or Code ('Unsafe Reflection') vulnerability in XMSS/XM

How urgent is CVE-2018-1000613?

Priority 62/100. Critical severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action

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