CVE catalog
CVE-2020-18976
tcpreplay: CVE-2020-18976
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.66% · Oct 25, 2026
Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tcpreplay | sid | 4.5.4-1 | fixed |
| Debian | tcpreplay | forky | 4.5.4-1 | fixed |
| Debian | tcpreplay | trixie | 4.5.1-1 | fixed |
| Debian | tcpreplay | bookworm | 4.4.3-1 | fixed |
| Ubuntu | tcpreplay | pro | 4.3.2-1build1 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.3.2-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.3.2-1ubuntu0.1~esm2 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.3.2-1ubuntu0.1~esm3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tcpreplay | source | sid | 4.3.3-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | forky | 4.3.3-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | trixie | 4.3.3-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | bookworm | 4.3.3-1 | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [tcpreplay]Fixed
Details (2)
4.4.3-1· amd64 · bookwormFixed · Fixed:
4.3.3-1dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12
4.4.3-1· arm64 · bookwormFixed · Fixed:
4.3.3-1dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12
[Debian 13 (Trixie)]
- [tcpreplay]Fixed
Details (2)
4.5.1-1· amd64 · trixieFixed · Fixed:
4.3.3-1dsa · tcpreplay · debian · 13
4.5.1-1· arm64 · trixieFixed · Fixed:
4.3.3-1dsa · tcpreplay · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-18976]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-18976]
- [https://security-tracker.debian.org/tracker/CVE-2020-18976]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-18976.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]