Description
tinc 1.0pre3 and 1.0pre4 VPN does not authenticate forwarded packets, which allows remote attackers to inject data into user sessions without detection, and possibly control the data contents via cut-and-paste attacks on CBC.
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 | tinc | 1.0pre5 | — |
| Debian 13 | tinc | 1.0pre5 | — |
| Debian 12 | tinc | 1.0pre5 | — |
References
- 20020109 Security flaws in tinc mailing-list
- vpn-modify-packets(7868) vdb-entry