What’s Vulnerable › Vulnerabilities

CVE-2018-14642

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-09-18 · updated 2026-06-17
• Weakness: CWE-200

Description

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.

Affected products

• Red Hat JBoss EAP: 7.1, 7.2, 7.3
• Red Hat undertow: all versions

References

• https://access.redhat.com/errata/RHSA-2019:0362
• https://access.redhat.com/errata/RHSA-2019:0364
• https://access.redhat.com/errata/RHSA-2019:0365
• https://access.redhat.com/errata/RHSA-2019:0380
• https://access.redhat.com/errata/RHSA-2019:1106
• https://access.redhat.com/errata/RHSA-2019:1107
• https://access.redhat.com/errata/RHSA-2019:1108
• https://access.redhat.com/errata/RHSA-2019:1140
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642
• https://access.redhat.com/errata/RHSA-2019:0362
• https://access.redhat.com/errata/RHSA-2019:0364
• https://access.redhat.com/errata/RHSA-2019:0365

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