What’s Vulnerable › Vulnerabilities

CVE-2018-12547

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-02-11 · updated 2026-06-17
• Weakness: CWE-20

Description

In Eclipse OpenJ9, prior to the 0.12.0 release, the jio_snprintf() and jio_vsnprintf() native methods ignored the length parameter. This affects existing APIs that called the functions to exceed the allocated buffer. This functions were not directly callable by non-native user code.

Affected products

• The Eclipse Foundation Eclipse OpenJ9: before 0.12.0 — fixed in 0.12.0
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Workstation: 6.0, 7.0
• Red Hat Satellite 6: 5.8

How to fix

Upgrade to a fixed version: The Eclipse Foundation Eclipse OpenJ9 0.12.0. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2019:0469
• https://access.redhat.com/errata/RHSA-2019:0472
• https://access.redhat.com/errata/RHSA-2019:0473
• https://access.redhat.com/errata/RHSA-2019:0474
• https://access.redhat.com/errata/RHSA-2019:0640
• https://access.redhat.com/errata/RHSA-2019:1238
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=543659
• https://access.redhat.com/errata/RHSA-2019:0469
• https://access.redhat.com/errata/RHSA-2019:0472
• https://access.redhat.com/errata/RHSA-2019:0473
• https://access.redhat.com/errata/RHSA-2019:0474
• https://access.redhat.com/errata/RHSA-2019:0640

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