{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-3618", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "dateUpdated": "2022-11-23T00:00:00", "dateReserved": "2021-06-24T00:00:00", "datePublished": "2022-03-23T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2022-11-23T00:00:00"}, "descriptions": [{"lang": "en", "value": "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": [{"vendor": "n/a", "product": "ALPACA", "versions": [{"version": "vsftpd 3.0.4, nginx 1.21.0, sendmail 8.17", "status": "affected"}]}], "references": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1975623"}, {"url": "https://alpaca-attack.com/"}, {"name": "[debian-lts-announce] 20221122 [SECURITY] [DLA 3203-1] nginx security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00031.html"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-295", "cweId": "CWE-295"}]}]}}}

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