GHSA-F7WF-FGWG-64PX

Vulnerability from github – Published: 2022-05-14 02:07 – Updated: 2025-04-12 12:56
VLAI?
Details

wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack.

Severity ?
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2015-7744"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-01-22T15:59:00Z",
    "severity": "MODERATE"
  },
  "details": "wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack.",
  "id": "GHSA-f7wf-fgwg-64px",
  "modified": "2025-04-12T12:56:24Z",
  "published": "2022-05-14T02:07:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-7744"
    },
    {
      "type": "WEB",
      "url": "https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf"
    },
    {
      "type": "WEB",
      "url": "https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy"
    },
    {
      "type": "WEB",
      "url": "https://wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found%2C_An_Attack_on_RSA_using_CRT_and_DoS_Vulnerability_With_DTLS.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "http://wolfssl.com/wolfSSL/Docs-wolfssl-changelog.html"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1034708"
    }
  ],
  "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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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.