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Fencer Intel
high 7.1

CVE-2018-17582 json

Tcpreplay v4.3.0 beta1 contains a heap-based buffer over-read.

published 8y ago modified 4mo ago also EUVD-2018-9330

cvss
7.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Tcpreplay v4.3.0 beta1 contains a heap-based buffer over-read. The get_next_packet() function in the send_packets.c file uses the memcpy() function unsafely to copy sequences from the source buffer pktdata to the destination (*prev_packet)->pktdata. This will result in a Denial of Service (DoS) and potentially Information Exposure when the application attempts to process a file.

Patch / fix

  • tcpreplay Debian 14, Debian 13, Debian 12 4.3.1-1

debian advisories DEBIAN-CVE-2018-17582

  • tcpreplay Ubuntu Pro 16.04 LTS 3.4.4-2+deb8u1ubuntu0.1~esm1
  • tcpreplay Ubuntu Pro 18.04 LTS 4.2.6-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-17582

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

  • tcpreplay openSUSE Tumbleweed 4.3.4-1.3

opensuse advisories openSUSE-SU-2024:11426-1

Is CVE-2018-17582 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2018-17582 updated cvss 3.3

tcpreplay: heap-based buffer over-read in the get_next_packet() in send_packets.c

  • 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

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/appneta/tcpreplay/issues/484 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/SegfaultMasters/covering360/blob/master/tcpreplay referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel 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.