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Fencer Intel
high 7.8

CVE-2019-8377 json

An issue was discovered in Tcpreplay 4.3.1.

published 7y ago modified 4mo ago also EUVD-2019-17767

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

An issue was discovered in Tcpreplay 4.3.1. A NULL pointer dereference occurred in the function get_ipv6_l4proto() located at get.c. This can be triggered by sending a crafted pcap file to the tcpreplay-edit binary. It allows an attacker to cause a Denial of Service (Segmentation fault) or possibly have unspecified other impact.

Patch / fix

  • tcpreplay Debian 14, Debian 13, Debian 12 4.3.1-2

debian advisories DEBIAN-CVE-2019-8377

  • tcpreplay openSUSE Tumbleweed 4.3.4-1.3

opensuse advisories openSUSE-SU-2024:11426-1

  • tcpreplay Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 4.3.2-r0

alpine advisories ALPINE-CVE-2019-8377

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

  • tcpreplay Arch Linux 4.3.2-1

arch linux advisories AVG-902

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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-2019-8377 updated cvss 6.5

tcpreplay: null pointer dereference in function get_ipv6_l4proto() in get.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

1.33% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/appneta/tcpreplay/issues/536 referenced PoC, tagged "exploit" by a source, unverified
  • research.loginsoft.com https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-function-get_ipv6_l4proto-tcpreplay-4-3-1/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/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.