usn-3347-1
Vulnerability from osv_ubuntu
Published
2017-07-03 18:40
Modified
2026-04-22 07:36
Summary
libgcrypt11, libgcrypt20 vulnerabilities
Details

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to recover RSA private keys. (CVE-2017-7526)

It was discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to possibly recover EdDSA private keys. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-9526)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-7526",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libgcrypt11",
            "binary_version": "1.5.3-2ubuntu4.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libgcrypt11",
        "purl": "pkg:deb/ubuntu/libgcrypt11@1.5.3-2ubuntu4.5?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.3-2ubuntu4.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.0-3ubuntu3",
        "1.5.3-2ubuntu1",
        "1.5.3-2ubuntu4",
        "1.5.3-2ubuntu4.1",
        "1.5.3-2ubuntu4.2",
        "1.5.3-2ubuntu4.3",
        "1.5.3-2ubuntu4.4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-7526",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2017-9526",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libgcrypt20",
            "binary_version": "1.6.5-2ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libgcrypt20",
        "purl": "pkg:deb/ubuntu/libgcrypt20@1.6.5-2ubuntu0.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.5-2ubuntu0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.3-2ubuntu1",
        "1.6.4-3",
        "1.6.4-4",
        "1.6.4-5",
        "1.6.5-2",
        "1.6.5-2ubuntu0.2"
      ]
    }
  ],
  "aliases": [],
  "details": "Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot\nBruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and\nYuval Yarom discovered that Libgcrypt was susceptible to an attack via\nside channels. A local attacker could use this attack to recover RSA\nprivate keys. (CVE-2017-7526)\n\nIt was discovered that Libgcrypt was susceptible to an attack via\nside channels. A local attacker could use this attack to possibly recover\nEdDSA private keys. This issue only applied to Ubuntu 16.04 LTS, Ubuntu\n16.10 and Ubuntu 17.04. (CVE-2017-9526)\n",
  "id": "USN-3347-1",
  "modified": "2026-04-22T07:36:34Z",
  "published": "2017-07-03T18:40:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3347-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-7526"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-9526"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libgcrypt11, libgcrypt20 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2017-7526",
    "UBUNTU-CVE-2017-9526"
  ]
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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