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CVE

CVE-2018-14642

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call th

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.

MEDIUM · CVSS 5.3 EPSS 0.00708
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

2
redhat undertowall versions
redhat jboss enterprise application platformall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven io.undertow:undertow-core MODERATE fixed in 2.0.19.FINAL
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Sep 2018 · 01:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
⚑

Vendor Advisories

8
rhsaRHSA-2019:1108Moderate
rhsaRHSA-2019:1107Moderate
rhsaRHSA-2019:1106Moderate
rhsaRHSA-2019:1140Moderate
rhsaRHSA-2019:0364Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/errata/RHSA-2019:0362Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642Issue TrackingPatchVendor Advisory
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