Description
tcptraceroute 1.4 and earlier does not fully drop privileges after obtaining a file descriptor for capturing packets, which may allow local users to gain access to the descriptor via a separate vulnerability in tcptraceroute.
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 | tcptraceroute | 1.4-4 | — |
| Debian 13 | tcptraceroute | 1.4-4 | — |
| Debian 12 | tcptraceroute | 1.4-4 | — |
| Debian 3.0 | tcptraceroute | 1.2-2 | DSA-330 |
Advisories 1
- DSA-330 tcptraceroute - failure to drop root privileges Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-330 vendor-advisory