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CVE-2018-1000180: Bouncy Castle BC 1.54 - 1.59, BC-FJA 1.0.0, BC-FJA 1.0.1 and earlier have a flaw in the Low-level interface to

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HIGH 7.5REMOTEWATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2018-1000180 is a high-severity flaw (CVSS 7.5) affecting bc-java, fips java api, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bouncy Castle BC 1.54 - 1.59, BC-FJA 1.0.0, BC-FJA 1.0.1 and earlier have a flaw in the Low-level interface to RSA key pair generator, specifically RSA Key Pairs generated in low-level API with added certainty may have less M-R tests than expected. This appears to be fixed in versions BC 1.60 beta 4 and later, BC-FJA 1.0.2 and later.

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance3.4% (top 11%)
CISA exploited listNo
WeaknessCWE-327
Published2018-06-05
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: bouncycastle · debian · oracle

Share: LinkedIn · X · Reddit

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: >= 1.54 and <= 1.59
Fixed in: newer than 1.59
Safe to downgrade to: a release before 1.54
1. Check installed version
apt-cache policy bc-java || rpm -q bc-java || bc-java --version
2. UPGRADE to newer than 1.59 (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 1.54 (Debian / Ubuntu)
apt-cache madison bc-java sudo apt install bc-java=<VERSION_BEFORE_1.54> 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_1.54> 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.
bouncycastle fips java api UPGRADE
Affected: <= 1.0.1
Fixed in: newer than 1.0.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy fips-java-api || rpm -q fips-java-api || fips-java-api --version
2. UPGRADE to newer than 1.0.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fips-java-api
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fips-java-api
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
debian debian linux MITIGATE
Affected: 9.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
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 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.
oracle business transaction management DOWNGRADE
Affected: 12.1.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.1.0
1. Check installed version
apt-cache policy business-transaction-management || rpm -q business-transaction-management || business-transaction-management --version
2. No fixed release: DOWNGRADE to a release before 12.1.0 (Debian / Ubuntu)
apt-cache madison business-transaction-management sudo apt install business-transaction-management=<VERSION_BEFORE_12.1.0> sudo apt-mark hold business-transaction-management
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list business-transaction-management sudo dnf downgrade business-transaction-management-<VERSION_BEFORE_12.1.0> sudo dnf versionlock add business-transaction-management
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-2018-1000180?

bc-java: upgrade to newer than 1.59; fips java api: upgrade to newer than 1.0.1; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-1000180 being exploited?

CVE-2018-1000180 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-2018-1000180 affect?

CVE-2018-1000180 affects bc-java, fips java api, debian linux. Severity is high (CVSS 7.5). Bouncy Castle BC 1.54 - 1.59, BC-FJA 1.0.0, BC-FJA 1.0.1 and earlier have a flaw in the Low-level interface to RSA key pair generator, specifically RSA Key Pairs generated in low-level API with added certainty may have less M-R tests than e

How urgent is CVE-2018-1000180?

Priority 58/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Java vulnerabilities · Debian vulnerabilities

Related CVEs

References

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