ghsa-3pj2-rvj5-6646
Vulnerability from github
Published
2022-05-24 19:06
Modified
2023-08-08 15:31
Details

An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.

Show details on source website


{
   affected: [],
   aliases: [
      "CVE-2021-23993",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-327",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-06-24T14:15:00Z",
      severity: "MODERATE",
   },
   details: "An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.",
   id: "GHSA-3pj2-rvj5-6646",
   modified: "2023-08-08T15:31:18Z",
   published: "2022-05-24T19:06:12Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-23993",
      },
      {
         type: "WEB",
         url: "https://bugzilla.mozilla.org/show_bug.cgi?id=1666360",
      },
      {
         type: "WEB",
         url: "https://www.mozilla.org/security/advisories/mfsa2021-13",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
         type: "CVSS_V3",
      },
   ],
}


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