Description
The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
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 | inn2 | 2.5.3-1 | — |
| Debian 13 | inn2 | 2.5.3-1 | — |
| Debian 12 | inn2 | 2.5.3-1 | — |
References
- MDVSA-2012:156 vendor-advisory
- 50661 third-party-advisory
- openSUSE-SU-2012:1171 vendor-advisory