Description
get_l2len in common/get.c in Tcpreplay 4.3.0 beta1 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via crafted packets, as demonstrated by tcpprep.
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 | 4.3.1-1 | — |
| Debian 13 | tcpreplay | 4.3.1-1 | — |
| Debian 12 | tcpreplay | 4.3.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | tcpreplay | 4.3.4-1ubuntu0.1~esm1 | USN-5205-1 |
| Ubuntu Pro 20.04 LTS | tcpreplay | 4.3.2-1ubuntu0.1~esm2 | USN-5205-1 |
| Ubuntu Pro 18.04 LTS | tcpreplay | 4.2.6-1ubuntu0.1~esm1 | USN-5205-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | tcpreplay | 3.4.4-2+deb8u1ubuntu0.1~esm2 | USN-5205-1 |
Advisories 1
- USN-5205-1 tcpreplay vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026