gsd-2020-12402
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.
Aliases
Aliases
CVE-2020-12402


To clipboard 

{
   GSD: {
      alias: "CVE-2020-12402",
      description: "During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.",
      id: "GSD-2020-12402",
      references: [
         "https://www.suse.com/security/cve/CVE-2020-12402.html",
         "https://www.debian.org/security/2020/dsa-4726",
         "https://access.redhat.com/errata/RHSA-2020:4076",
         "https://access.redhat.com/errata/RHSA-2020:3280",
         "https://ubuntu.com/security/CVE-2020-12402",
         "https://alas.aws.amazon.com/cve/html/CVE-2020-12402.html",
         "https://linux.oracle.com/cve/CVE-2020-12402.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2020-12402",
         ],
         details: "During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.",
         id: "GSD-2020-12402",
         modified: "2023-12-13T01:21:48.900347Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "security@mozilla.org",
            ID: "CVE-2020-12402",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "Firefox",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<",
                                       version_value: "78",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "Mozilla",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "RSA Key Generation vulnerable to side-channel attack",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://www.mozilla.org/security/advisories/mfsa2020-24/",
                  refsource: "MISC",
                  url: "https://www.mozilla.org/security/advisories/mfsa2020-24/",
               },
               {
                  name: "https://bugzilla.mozilla.org/show_bug.cgi?id=1631597",
                  refsource: "MISC",
                  url: "https://bugzilla.mozilla.org/show_bug.cgi?id=1631597",
               },
               {
                  name: "openSUSE-SU-2020:0953",
                  refsource: "SUSE",
                  url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html",
               },
               {
                  name: "openSUSE-SU-2020:0955",
                  refsource: "SUSE",
                  url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html",
               },
               {
                  name: "USN-4417-1",
                  refsource: "UBUNTU",
                  url: "https://usn.ubuntu.com/4417-1/",
               },
               {
                  name: "openSUSE-SU-2020:0983",
                  refsource: "SUSE",
                  url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html",
               },
               {
                  name: "DSA-4726",
                  refsource: "DEBIAN",
                  url: "https://www.debian.org/security/2020/dsa-4726",
               },
               {
                  name: "FEDORA-2020-3ef1937475",
                  refsource: "FEDORA",
                  url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/",
               },
               {
                  name: "openSUSE-SU-2020:1017",
                  refsource: "SUSE",
                  url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html",
               },
               {
                  name: "GLSA-202007-10",
                  refsource: "GENTOO",
                  url: "https://security.gentoo.org/glsa/202007-10",
               },
               {
                  name: "USN-4417-2",
                  refsource: "UBUNTU",
                  url: "https://usn.ubuntu.com/4417-2/",
               },
               {
                  name: "FEDORA-2020-16741ac7ff",
                  refsource: "FEDORA",
                  url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/",
               },
               {
                  name: "[debian-lts-announce] 20200929 [SECURITY] [DLA 2388-1] nss security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html",
               },
            ],
         },
      },
      "mozilla.org": {
         CVE_data_meta: {
            ASSIGNER: "security@mozilla.org",
            ID: "CVE-2020-12402",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "Firefox",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<",
                                       version_value: "78",
                                    },
                                 ],
                              },
                           },
                           {
                              product_name: "Thunderbird",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<",
                                       version_value: "78",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "Mozilla",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. <br />We would like to thank Sohaib ul Hassan for contributing a fix for this issue as well.<br />*Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78 and Thunderbird < 78.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "RSA Key Generation vulnerable to side-channel attack",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  url: "https://www.mozilla.org/security/advisories/mfsa2020-24/",
               },
               {
                  url: "https://www.mozilla.org/security/advisories/mfsa2020-29/",
               },
               {
                  url: "https://bugzilla.mozilla.org/show_bug.cgi?id=1631597",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "78.0",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "security@mozilla.org",
               ID: "CVE-2020-12402",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-203",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://www.mozilla.org/security/advisories/mfsa2020-24/",
                     refsource: "MISC",
                     tags: [
                        "Vendor Advisory",
                     ],
                     url: "https://www.mozilla.org/security/advisories/mfsa2020-24/",
                  },
                  {
                     name: "https://bugzilla.mozilla.org/show_bug.cgi?id=1631597",
                     refsource: "MISC",
                     tags: [
                        "Issue Tracking",
                        "Permissions Required",
                        "Vendor Advisory",
                     ],
                     url: "https://bugzilla.mozilla.org/show_bug.cgi?id=1631597",
                  },
                  {
                     name: "openSUSE-SU-2020:0953",
                     refsource: "SUSE",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html",
                  },
                  {
                     name: "openSUSE-SU-2020:0955",
                     refsource: "SUSE",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html",
                  },
                  {
                     name: "USN-4417-1",
                     refsource: "UBUNTU",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://usn.ubuntu.com/4417-1/",
                  },
                  {
                     name: "openSUSE-SU-2020:0983",
                     refsource: "SUSE",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html",
                  },
                  {
                     name: "DSA-4726",
                     refsource: "DEBIAN",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://www.debian.org/security/2020/dsa-4726",
                  },
                  {
                     name: "FEDORA-2020-3ef1937475",
                     refsource: "FEDORA",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/",
                  },
                  {
                     name: "openSUSE-SU-2020:1017",
                     refsource: "SUSE",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html",
                  },
                  {
                     name: "GLSA-202007-10",
                     refsource: "GENTOO",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://security.gentoo.org/glsa/202007-10",
                  },
                  {
                     name: "USN-4417-2",
                     refsource: "UBUNTU",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://usn.ubuntu.com/4417-2/",
                  },
                  {
                     name: "FEDORA-2020-16741ac7ff",
                     refsource: "FEDORA",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/",
                  },
                  {
                     name: "[debian-lts-announce] 20200929 [SECURITY] [DLA 2388-1] nss security update",
                     refsource: "MLIST",
                     tags: [
                        "Mailing List",
                        "Third Party Advisory",
                     ],
                     url: "https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "HIGH",
                  accessVector: "LOCAL",
                  authentication: "NONE",
                  availabilityImpact: "NONE",
                  baseScore: 1.2,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "NONE",
                  vectorString: "AV:L/AC:H/Au:N/C:P/I:N/A:N",
                  version: "2.0",
               },
               exploitabilityScore: 1.9,
               impactScore: 2.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "LOW",
               userInteractionRequired: true,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "HIGH",
                  attackVector: "LOCAL",
                  availabilityImpact: "NONE",
                  baseScore: 4.4,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "NONE",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "REQUIRED",
                  vectorString: "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N",
                  version: "3.1",
               },
               exploitabilityScore: 0.8,
               impactScore: 3.6,
            },
         },
         lastModifiedDate: "2022-01-04T16:38Z",
         publishedDate: "2020-07-09T15:15Z",
      },
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.