Description (CNA)
ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / ALPACA | affected vsftpd 3.0.4, nginx 1.21.0, sendmail 8.17 |
CWE
CWE-295
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1975623
- https://alpaca-attack.com/
- https://lists.debian.org/debian-lts-announce/2022/11/msg00031.html
ADP enrichment
No English description supplied.