Description
tcprewrite in Tcpreplay through 4.3.2 has a heap-based buffer over-read during a get_c operation. The issue is being triggered in the function get_ipv6_next() at common/get.c.
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 | 4.3.3-1 | — |
| Debian 13 | tcpreplay | 4.3.3-1 | — |
| Debian 12 | tcpreplay | 4.3.3-1 | — |
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~esm1 | USN-5205-1 |
| Ubuntu Pro 18.04 LTS | tcpreplay | 4.2.6-1ubuntu0.1~esm3 | 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 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tcpreplay | 4.6.2-1.1 | openSUSE-SU-2026:12337-1 |
Advisories 2
- openSUSE-SU-2026:12337-1 tcpreplay-4.6.2-1.1 on GA media SUSE / openSUSE Security Updates · Oct 29, 2026
- USN-5205-1 tcpreplay vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
References
- https://github.com/appneta/tcpreplay/issues/576
- FEDORA-2020-f47830961a vendor-advisory
- FEDORA-2020-256ac53cc7 vendor-advisory