CVE-2019-12121: An issue was detected in ONAP Portal through Dublin

This week

HIGH 7.5REMOTEUPGRADE

CVE-2019-12121 is a high-severity flaw (CVSS 7.5) affecting open network automation platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was detected in ONAP Portal through Dublin. By executing a padding oracle attack using the ONAPPORTAL/processSingleSignOn UserId field, an attacker is able to decrypt arbitrary information encrypted with the same symmetric key as UserId. All Portal setups are affected.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-326
Published	2020-03-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: onap

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

Am I affected?

Timeline

2020-03-18 19:15 UTCPublished CVE record published
2026-06-17 02:14 UTCUpdated Record last modified

onap open network automation platform UPGRADE

Affected: >= 3.0.0 and < 4.0.0

Fixed in: 4.0.0

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy open-network-automation-platform || rpm -q open-network-automation-platform || open-network-automation-platform --version

2. UPGRADE to 4.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade open-network-automation-platform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade open-network-automation-platform

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 3.0.0 (Debian / Ubuntu)

apt-cache madison open-network-automation-platform sudo apt install open-network-automation-platform=<VERSION_BEFORE_3.0.0> sudo apt-mark hold open-network-automation-platform

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list open-network-automation-platform sudo dnf downgrade open-network-automation-platform-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add open-network-automation-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.

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-2019-12121?

open network automation platform: upgrade to 4.0.0. Exact commands for each OS are on this page.

Is CVE-2019-12121 being exploited?

CVE-2019-12121 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-2019-12121 affect?

CVE-2019-12121 affects open network automation platform. Severity is high (CVSS 7.5). An issue was detected in ONAP Portal through Dublin. By executing a padding oracle attack using the ONAPPORTAL/processSingleSignOn UserId field, an attacker is able to decrypt arbitrary information encrypted with the same symmetric key as U

How urgent is CVE-2019-12121?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-12132 CRITICAL 9.8 UPGRADE An issue was discovered in ONAP SDNC before Dublin
CVE-2019-12131 CRITICAL 9.1 UPGRADE An issue was detected in ONAP APPC through Dublin and SDC through Dublin
CVE-2019-12130 CRITICAL 9.8 UPGRADE In ONAP CLI through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254,
CVE-2019-12129 CRITICAL 9.8 UPGRADE In ONAP MSB through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254,
CVE-2019-12128 CRITICAL 9.8 UPGRADE In ONAP SO through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 3

References

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