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Fencer Vulns
critical 9.1

CVE-2018-14938 json

An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha.

published 2018-08-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6820

cvss
9.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha. There is an integer overflow in the function handle_prism during caplen processing. If the caplen is less than 144, one can cause an integer overflow in the function handle_80211, which will result in an out-of-bounds read and may allow access to sensitive memory (or a denial of service).

Patch / fix

  • tcpflow Debian 14, Debian 13, Debian 12 1.5.0+repack1-1

debian advisories DEBIAN-CVE-2018-14938

  • tcpflow Ubuntu 16.04 LTS 1.4.5+repack1-1ubuntu0.1
  • tcpflow Ubuntu 18.04 LTS 1.4.5+repack1-4ubuntu0.18.04.1
  • tcpflow Ubuntu Pro 14.04 LTS 1.4.4+repack1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-14938

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tcpflow Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.5.0-r0

alpine advisories ALPINE-CVE-2018-14938

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-14938 updated cvss 5.5

tcpflow: integer overflow vulnerability in wifipacp.cpp

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/simsong/tcpflow/issues/182 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.