# CVE-2023-27784: tcpreplay: An issue found in TCPReplay v.4.4.3 allows a remote attacker to cause a denial of service via the read_hexstring func...

CVE-2023-27784 is fixed in tcpreplay on 1 platform, first by DEBIAN-CVE-2023-27784, released March 16, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-27784
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0147
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 16, 2023

## Description

An issue found in TCPReplay v.4.4.3 allows a remote attacker to cause a denial of service via the read_hexstring function at the utils.c:309 endpoint.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tcpreplay Debian 13.5 (trixie) | 4.4.4-1 | [DEBIAN-CVE-2023-27784](https://patchblox.com/security/data/fix/linux/debian-cve-2023-27784.md) | Mar 16, 2023 |
| Linux | tcpreplay Debian 14 | 4.4.4-1 | [DEBIAN-CVE-2023-27784](https://patchblox.com/security/data/fix/linux/debian-cve-2023-27784.md) | Mar 16, 2023 |
| Linux | tcpreplay Ubuntu 18.04.6 LTS (bionic) | 4.2.6-1ubuntu0.1~esm5 | [tcpreplay 4.2.6-1ubuntu0.1~esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tcpreplay-4.2.6-1ubuntu0.1-esm5.md) | Mar 12, 2024 |
| Linux | tcpreplay Ubuntu 20.04 LTS (focal) | 4.3.2-1ubuntu0.1~esm3 | [tcpreplay 4.3.2-1ubuntu0.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-tcpreplay-4.3.2-1ubuntu0.1-esm3.md) | Mar 12, 2024 |
| Linux | tcpreplay Ubuntu 22.04.1 LTS (jammy) | 4.3.4-1ubuntu0.1~esm2 | [tcpreplay 4.3.4-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-tcpreplay-4.3.4-1ubuntu0.1-esm2.md) | Mar 12, 2024 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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