CWE-287
DiscouragedImproper Authentication
Abstraction: Class · Status: Draft
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
5966 vulnerabilities reference this CWE, most recent first.
GHSA-H5H2-7JMF-GVW5
Vulnerability from github – Published: 2026-01-14 18:31 – Updated: 2026-01-14 18:31A vulnerability exists in an Orchestrator service that could allow an unauthenticated remote attacker to bypass multi-factor authentication requirements. Successful exploitation could allow an attacker to create an admin user account without the necessary multi-factor authentication, thereby compromising the integrity of secured access to the system.
{
"affected": [],
"aliases": [
"CVE-2025-37184"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-14T17:16:06Z",
"severity": "MODERATE"
},
"details": "A vulnerability exists in an Orchestrator service that could allow an unauthenticated remote attacker to bypass multi-factor authentication requirements. Successful exploitation could allow an attacker to create an admin user account without the necessary multi-factor authentication, thereby compromising the integrity of secured access to the system.",
"id": "GHSA-h5h2-7jmf-gvw5",
"modified": "2026-01-14T18:31:37Z",
"published": "2026-01-14T18:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37184"
},
{
"type": "WEB",
"url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw04992en_us\u0026docLocale=en_US"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-H5HR-H582-R8WP
Vulnerability from github – Published: 2025-05-13 00:31 – Updated: 2025-11-03 21:33The issue was addressed with improved authentication. This issue is fixed in iPadOS 17.7.7, iOS 18.5 and iPadOS 18.5. An attacker with physical access to a device may be able to access notes from the lock screen.
{
"affected": [],
"aliases": [
"CVE-2025-31228"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-12T22:15:23Z",
"severity": "MODERATE"
},
"details": "The issue was addressed with improved authentication. This issue is fixed in iPadOS 17.7.7, iOS 18.5 and iPadOS 18.5. An attacker with physical access to a device may be able to access notes from the lock screen.",
"id": "GHSA-h5hr-h582-r8wp",
"modified": "2025-11-03T21:33:52Z",
"published": "2025-05-13T00:31:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31228"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/122404"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/122405"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2025/May/5"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2025/May/6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-H5J3-5X63-P8JV
Vulnerability from github – Published: 2022-09-16 17:05 – Updated: 2022-09-16 17:05Impact
By passing a template of the distribution wizard to the xpart template, user accounts can be created even when user registration is disabled. This also circumvents any email verification. Before versions 14.2 and 13.10.4, this can also be exploited on a private wiki, thus potentially giving the attacker access to the wiki. Depending on the configured default rights of users, this could also give attackers write access to an otherwise read-only public wiki. Users can also be created when an external authentication system like LDAP is configured, but authentication fails unless the authentication system supports a bypass/local accounts are enabled in addition to the external authentication system.
Patches
This issue has been patched in XWiki 13.10.5 and 14.3RC1.
Workarounds
It is possible to replace xpart.vm, the entry point for this attack, by a patched version from the patch without updating XWiki.
References
- https://jira.xwiki.org/browse/XWIKI-19558
For more information
If you have any questions or comments about this advisory: * Open an issue in Jira XWiki.org * Email us at Security Mailing List
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-web-templates"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "13.10.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-web"
},
"ranges": [
{
"events": [
{
"introduced": "8.0-rc-1"
},
{
"fixed": "13.10.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-web-templates"
},
"ranges": [
{
"events": [
{
"introduced": "14.0"
},
{
"fixed": "14.3-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-web"
},
"ranges": [
{
"events": [
{
"introduced": "14.0"
},
{
"fixed": "14.3-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-36093"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-288"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-16T17:05:55Z",
"nvd_published_at": "2022-09-08T18:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nBy passing a template of the distribution wizard to the xpart template, user accounts can be created even when user registration is disabled. This also circumvents any email verification. Before versions 14.2 and 13.10.4, this can also be exploited on a private wiki, thus potentially giving the attacker access to the wiki. Depending on the configured default rights of users, this could also give attackers write access to an otherwise read-only public wiki. Users can also be created when an external authentication system like LDAP is configured, but authentication fails unless the authentication system supports a bypass/local accounts are enabled in addition to the external authentication system.\n\n### Patches\nThis issue has been patched in XWiki 13.10.5 and 14.3RC1.\n\n### Workarounds\nIt is possible to replace `xpart.vm`, the entry point for this attack, by a patched version from the [patch](https://github.com/xwiki/xwiki-platform/commit/70c64c23f4404f33289458df2a08f7c4be022755) without updating XWiki.\n\n### References\n* https://jira.xwiki.org/browse/XWIKI-19558\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n* Email us at [Security Mailing List](mailto:security@xwiki.org)\n",
"id": "GHSA-h5j3-5x63-p8jv",
"modified": "2022-09-16T17:05:55Z",
"published": "2022-09-16T17:05:55Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-h5j3-5x63-p8jv"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36093"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/70c64c23f4404f33289458df2a08f7c4be022755"
},
{
"type": "PACKAGE",
"url": "https://github.com/xwiki/xwiki-platform"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XWIKI-19558"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "XWiki Platform Web Templates vulnerable to Unauthorized User Registration Through the Distribution Wizard"
}
GHSA-H5M2-8PMW-GMG7
Vulnerability from github – Published: 2022-05-02 03:26 – Updated: 2024-02-13 18:38Ignite Realtime Openfire before 3.6.5 does not properly implement the register.password (aka canChangePassword) console configuration setting, which allows remote authenticated users to bypass intended policy and change their own passwords via a passwd_change IQ packet.
{
"affected": [],
"aliases": [
"CVE-2009-1596"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2009-05-11T14:30:00Z",
"severity": "MODERATE"
},
"details": "Ignite Realtime Openfire before 3.6.5 does not properly implement the register.password (aka canChangePassword) console configuration setting, which allows remote authenticated users to bypass intended policy and change their own passwords via a passwd_change IQ packet.",
"id": "GHSA-h5m2-8pmw-gmg7",
"modified": "2024-02-13T18:38:21Z",
"published": "2022-05-02T03:26:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-1596"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/50291"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/34984"
},
{
"type": "WEB",
"url": "http://www.igniterealtime.org/community/message/190280"
},
{
"type": "WEB",
"url": "http://www.igniterealtime.org/issues/browse/JM-1532"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/54189"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/34804"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-H5WP-VM75-CXVW
Vulnerability from github – Published: 2022-05-02 03:33 – Updated: 2022-05-02 03:33The admin interface in AWScripts.com Gallery Search Engine 1.5 allows remote attackers to bypass authentication and gain administrative access by setting the awse_logged cookie to 1.
{
"affected": [],
"aliases": [
"CVE-2009-2233"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2009-06-26T18:30:00Z",
"severity": "HIGH"
},
"details": "The admin interface in AWScripts.com Gallery Search Engine 1.5 allows remote attackers to bypass authentication and gain administrative access by setting the awse_logged cookie to 1.",
"id": "GHSA-h5wp-vm75-cxvw",
"modified": "2022-05-02T03:33:10Z",
"published": "2022-05-02T03:33:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-2233"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/51276"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/35513"
},
{
"type": "WEB",
"url": "http://www.exploit-db.com/exploits/8994"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2009/1649"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-H698-R4HM-W94P
Vulnerability from github – Published: 2020-08-31 22:54 – Updated: 2021-09-23 20:58Versions 2.x.x and earlier of paypal-ipn are affected by a validation bypass vulnerability.
paypal-ipn uses the test_ipn parameter (which is set by the PayPal IPN simulator) to determine if it should use the production PayPal site or the sandbox.
A motivated attacker could craft a request string using the simulator to fool the application into entering the sandbox mode, potentially allowing purchases without valid payment.
Recommendation
Upgrade to version 3.0.0 or later.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "paypal-ipn"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2014-10067"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:08:20Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "Versions 2.x.x and earlier of `paypal-ipn` are affected by a validation bypass vulnerability. \n\npaypal-ipn uses the `test_ipn` parameter (which is set by the PayPal IPN simulator) to determine if it should use the production PayPal site or the sandbox.\n\nA motivated attacker could craft a request string using the simulator to fool the application into entering the sandbox mode, potentially allowing purchases without valid payment.\n\n\n## Recommendation\n\nUpgrade to version 3.0.0 or later.",
"id": "GHSA-h698-r4hm-w94p",
"modified": "2021-09-23T20:58:30Z",
"published": "2020-08-31T22:54:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-10067"
},
{
"type": "WEB",
"url": "https://github.com/andzdroid/paypal-ipn/issues/11"
},
{
"type": "PACKAGE",
"url": "https://github.com/andzdroid/paypal-ipn"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/26"
}
],
"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"
}
],
"summary": "Validation Bypass in paypal-ipn"
}
GHSA-H6CC-CF9Q-CGXH
Vulnerability from github – Published: 2022-05-17 02:39 – Updated: 2022-05-17 02:39In Lenovo XClarity Administrator (LXCA) before 1.3.0, if service data is downloaded from LXCA, a non-administrative user may have access to password information for users that have previously authenticated to the LXCA's internal LDAP server, including administrative accounts and service accounts with administrative privileges. This is an issue only for users who have used local authentication with LXCA and not remote authentication against external LDAP or ADFS servers.
{
"affected": [],
"aliases": [
"CVE-2017-3745"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-20T00:29:00Z",
"severity": "HIGH"
},
"details": "In Lenovo XClarity Administrator (LXCA) before 1.3.0, if service data is downloaded from LXCA, a non-administrative user may have access to password information for users that have previously authenticated to the LXCA\u0027s internal LDAP server, including administrative accounts and service accounts with administrative privileges. This is an issue only for users who have used local authentication with LXCA and not remote authentication against external LDAP or ADFS servers.",
"id": "GHSA-h6cc-cf9q-cgxh",
"modified": "2022-05-17T02:39:25Z",
"published": "2022-05-17T02:39:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-3745"
},
{
"type": "WEB",
"url": "https://support.lenovo.com/us/en/product_security/LEN-13671"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-H6FC-48RJ-7QQH
Vulnerability from github – Published: 2026-05-12 18:30 – Updated: 2026-05-18 20:38Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected
Description: When DIGEST authentication was configured, any user not known to the configured Realm would be authenticated if they presented the password "null".
Mitigation: Users of the affected versions should apply one of the following mitigations: - Upgrade to Apache Tomcat 11.0.22 or later - Upgrade to Apache Tomcat 10.1.55 or later - Upgrade to Apache Tomcat 9.0.118 or later
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.118"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.55"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.22"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.118"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.55"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.22"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.118"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.55"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.22"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-43512"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-18T20:38:27Z",
"nvd_published_at": "2026-05-12T16:16:17Z",
"severity": "CRITICAL"
},
"details": "Versions Affected:\nApache Tomcat 11.0.0-M1 to 11.0.21\nApache Tomcat 10.1.0-M1 to 10.1.54\nApache Tomcat 9.0.0.M1 to 9.0.117\nOlder, unsupported versions may also be affected\n\nDescription:\nWhen DIGEST authentication was configured, any user not known to the\nconfigured Realm would be authenticated if they presented the password\n\"null\".\n\nMitigation:\nUsers of the affected versions should apply one of the following\nmitigations:\n- Upgrade to Apache Tomcat 11.0.22 or later\n- Upgrade to Apache Tomcat 10.1.55 or later\n- Upgrade to Apache Tomcat 9.0.118 or later",
"id": "GHSA-h6fc-48rj-7qqh",
"modified": "2026-05-18T20:38:28Z",
"published": "2026-05-12T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43512"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/3d4d3fae07a6cd9c2eb193c5491001740ec64448"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/6565a6cb6499e56fe2f34457cec99f9d1c4f39e9"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/a99c355e8199adbfd67c9a1fffbd85b810b196cd"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-10.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-11.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-9.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/05/12/8"
}
],
"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:H",
"type": "CVSS_V3"
}
],
"summary": "Apache Tomcat - Digest authenticator will authenticate any unknown user"
}
GHSA-H6FM-WMVQ-PPW8
Vulnerability from github – Published: 2023-08-21 21:31 – Updated: 2024-04-04 07:05Because of an authentication flaw an attacker would be capable of generating a web report that discloses sensitive information such as internal IP addresses, usernames, store names and other sensitive information.
{
"affected": [],
"aliases": [
"CVE-2023-25913"
],
"database_specific": {
"cwe_ids": [
"CWE-200",
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-21T21:15:07Z",
"severity": "HIGH"
},
"details": "Because of an authentication flaw an attacker would be capable of generating a web report that discloses sensitive information such as internal IP addresses, usernames, store names and other sensitive information.",
"id": "GHSA-h6fm-wmvq-ppw8",
"modified": "2024-04-04T07:05:21Z",
"published": "2023-08-21T21:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25913"
},
{
"type": "WEB",
"url": "https://csirt.divd.nl/CVE-2023-25913"
},
{
"type": "WEB",
"url": "https://csirt.divd.nl/DIVD-2023-00025"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-H6HM-V9VX-MRF7
Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-05-24 17:49A remote authentication restriction bypass vulnerability was discovered in Aruba AirWave Management Platform version(s) prior to 8.2.12.1. Aruba has released patches for AirWave Management Platform that address this security vulnerability.
{
"affected": [],
"aliases": [
"CVE-2021-25147"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-28T15:15:00Z",
"severity": "HIGH"
},
"details": "A remote authentication restriction bypass vulnerability was discovered in Aruba AirWave Management Platform version(s) prior to 8.2.12.1. Aruba has released patches for AirWave Management Platform that address this security vulnerability.",
"id": "GHSA-h6hm-v9vx-mrf7",
"modified": "2022-05-24T17:49:01Z",
"published": "2022-05-24T17:49:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25147"
},
{
"type": "WEB",
"url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-010.txt"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
Strategy: Libraries or Frameworks
Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse
An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.
CAPEC-115: Authentication Bypass
An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.
CAPEC-151: Identity Spoofing
Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.
CAPEC-194: Fake the Source of Data
An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
CAPEC-22: Exploiting Trust in Client
An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.
CAPEC-593: Session Hijacking
This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.
CAPEC-633: Token Impersonation
An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.
CAPEC-650: Upload a Web Shell to a Web Server
By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.
CAPEC-94: Adversary in the Middle (AiTM)
An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.