ALT-PU-2023-5900-1
Package sendmail updated to version 8.18.0-alt0.Alpha2 for branch sisyphus_e2k.
Closed vulnerabilities
Published: 2022-03-23
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-3618
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.
Severity: HIGH (7.4)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References:
- https://alpaca-attack.com/
- https://alpaca-attack.com/
- https://bugzilla.redhat.com/show_bug.cgi?id=1975623
- https://bugzilla.redhat.com/show_bug.cgi?id=1975623
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