CVE catalog
CVE-2023-4256
Tcpreplay vulnerabilities
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.33% · Oct 25, 2026
Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function within plugins/dlt_plugins.c. This vulnerability can be exploited by supplying a specifically crafted file to the tcprewrite binary. This flaw enables a local attacker to initiate a Denial of Service (DoS) attack.
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 | vulnerable |
| Ubuntu | tcpreplay | noble | Not reported | vulnerable |
| Ubuntu | tcpreplay | noble | 4.4.4-1ubuntu0.1~esm1 | fixed |
| Opensuse | tcpreplay | leap 16.0 | 4.5.2-bp160.1.1 | fixed |
| Ubuntu | tcpreplay | pro | 4.4.3-1 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.4.4-1 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.4.4-1build1 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.4.4-1build2 | vulnerable |
| Ubuntu | tcpreplay | pro | 4.4.4-1ubuntu0.1~esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tcpreplay | source | sid | 4.5.1-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | forky | 4.5.1-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | trixie | 4.5.1-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
| Ubuntu | tcpreplay | deb | noble | 4.4.4-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Opensuse | tcpreplay | rpm | leap 16.0 | 4.5.2-bp160.1.1 | Not reported | OPENSUSE-SU-2025:20119-1 | Not reported |
| Ubuntu | tcpreplay | deb | pro | 4.4.4-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2023-4256 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2025_20119-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-4256]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-4256]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:20119-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-4256]
- [https://ubuntu.com/security/notices/USN-7231-1]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]