Description
A vulnerability was determined in appneta tcpreplay up to 4.5.2-beta2. The impacted element is the function untrunc_packet of the file src/tcpedit/edit_packet.c of the component tcprewrite. Executing manipulation can lead to use after free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. This patch is called 73008f261f1cdf7a1087dc8759115242696d35da. Applying a patch is advised to resolve this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| appneta | tcpreplay | 4.5.2-beta1, 4.5.2-beta2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tcpreplay | 4.5.2-1 | — |
| Debian 13 | tcpreplay | No fix yet | — |
| Debian 12 | tcpreplay | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | tcpreplay | No fix yet | — |
| Ubuntu 26.04 LTS | tcpreplay | No fix yet | — |
| Ubuntu 25.10 | tcpreplay | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | tcpreplay | No fix yet | — |
| Ubuntu Pro 22.04 LTS | tcpreplay | No fix yet | — |
| Ubuntu Pro 20.04 LTS | tcpreplay | No fix yet | — |
| Ubuntu Pro 18.04 LTS | tcpreplay | No fix yet | — |
| Ubuntu Pro 16.04 LTS | tcpreplay | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tcpreplay | 4.5.2-1.1 | openSUSE-SU-2025:15728-1 |
| openSUSE Leap 16.0 | tcpreplay | 4.5.2-bp160.1.1 | openSUSE-SU-2025:20119-1 |
Advisories 2
- openSUSE-SU-2025:20119-1 Security update for tcpreplay SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15728-1 tcpreplay-4.5.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- VDB-320537 | appneta tcpreplay tcprewrite edit_packet.c untrunc_packet use after free vdb-entry technical-description
- VDB-320537 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #630495 | tcpreplay tcprewrite tcpreplay version 6fcbf03 (the newest master in https://github.com/appneta/tcpreplay) Use-After-Free third-party-advisory
- https://github.com/appneta/tcpreplay/issues/970 issue-tracking
- https://github.com/appneta/tcpreplay/issues/970#issuecomment-3198966053 issue-tracking
- https://drive.google.com/file/d/1_aONM_TOF96JbnYviPyZhVk-7HObtX8H/view?usp=sharing exploit
- https://github.com/appneta/tcpreplay/commit/73008f261f1cdf7a1087dc8759115242696d35da patch