ghsa-r9r5-jxp7-whr4
Vulnerability from github
Published
2022-03-24 00:00
Modified
2022-04-05 00:01
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Details

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.

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{
   affected: [],
   aliases: [
      "CVE-2021-3618",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-295",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2022-03-23T20:15:00Z",
      severity: "HIGH",
   },
   details: "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.",
   id: "GHSA-r9r5-jxp7-whr4",
   modified: "2022-04-05T00:01:06Z",
   published: "2022-03-24T00:00:17Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-3618",
      },
      {
         type: "WEB",
         url: "https://github.com/nginx/nginx/commit/173f16f736c10eae46cd15dd861b04b82d91a37a",
      },
      {
         type: "WEB",
         url: "https://alpaca-attack.com",
      },
      {
         type: "WEB",
         url: "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991328",
      },
      {
         type: "WEB",
         url: "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991329",
      },
      {
         type: "WEB",
         url: "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991331",
      },
      {
         type: "WEB",
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1975623",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2022/11/msg00031.html",
      },
      {
         type: "WEB",
         url: "https://ubuntu.com/security/CVE-2021-3618",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
         type: "CVSS_V3",
      },
   ],
}


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