Description
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.
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 | 4.3.1-2 | — |
| Debian 13 | tcpreplay | 4.3.1-2 | — |
| Debian 12 | tcpreplay | 4.3.1-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | 4.3.4-1.3 | openSUSE-SU-2024:11426-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tcpreplay | 4.3.2-r0 | — |
| Alpine v3.23 | tcpreplay | 4.3.2-r0 | — |
| Alpine v3.22 | tcpreplay | 4.3.2-r0 | — |
| Alpine v3.21 | tcpreplay | 4.3.2-r0 | — |
| Alpine v3.20 | tcpreplay | 4.3.2-r0 | — |
Advisories 1
- openSUSE-SU-2024:11426-1 tcpreplay-4.3.4-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/appneta/tcpreplay/issues/536
- https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-function-get_ipv6_l4proto-tcpreplay-4-3-1/
- 107085 vdb-entry
- FEDORA-2019-a9c08d4b40 vendor-advisory
- FEDORA-2019-e40253f67e vendor-advisory
- FEDORA-2019-7d689dd314 vendor-advisory
- FEDORA-2020-f47830961a vendor-advisory
- FEDORA-2020-256ac53cc7 vendor-advisory