ghsa-665h-28h9-qh6v
Vulnerability from github
Published
2022-05-14 01:40
Modified
2025-04-20 03:38
Severity ?
5.9 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Details

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

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{
  "affected": [],
  "aliases": [
    "CVE-2017-9526"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-06-11T02:29:00Z",
    "severity": "MODERATE"
  },
  "details": "In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.",
  "id": "GHSA-665h-28h9-qh6v",
  "modified": "2025-04-20T03:38:48Z",
  "published": "2022-05-14T01:40:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9526"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1042326"
    },
    {
      "type": "WEB",
      "url": "https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=5a22de904a0a366ae79f03ff1e13a1232a89e26b"
    },
    {
      "type": "WEB",
      "url": "https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=f9494b3f258e01b6af8bd3941ce436bcc00afc56"
    },
    {
      "type": "WEB",
      "url": "https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=5a22de904a0a366ae79f03ff1e13a1232a89e26b"
    },
    {
      "type": "WEB",
      "url": "https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=f9494b3f258e01b6af8bd3941ce436bcc00afc56"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2017/dsa-3880"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/99046"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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