Common Weakness Enumeration

CWE-209

Allowed

Generation of Error Message Containing Sensitive Information

Abstraction: Base · Status: Draft

The product generates an error message that includes sensitive information about its environment, users, or associated data.

833 vulnerabilities reference this CWE, most recent first.

GHSA-77GJ-CRHP-3GVX

Vulnerability from github – Published: 2024-08-20 18:25 – Updated: 2024-09-17 16:24
VLAI
Summary
Umbraco CMS vulnerable to Generation of Error Message Containing Sensitive Information
Details

Impact

Some endpoints in the Management API can return stack trace information, even when Umbraco is not in debug mode.

Explanation of the vulnerability

Management API endpoints leaked stack traces in case of Internal server errors, no matter if the debug setting was disabled.

E.g. when paging with negative numbers in some apis

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Umbraco.Cms.Api.Management"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.0.0"
            },
            {
              "fixed": "14.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-43376"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-20T18:25:15Z",
    "nvd_published_at": "2024-08-20T15:15:23Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nSome endpoints in the Management API can return stack trace information, even when Umbraco is not in debug mode.\n\n### Explanation of the vulnerability\nManagement API endpoints leaked stack traces in case of Internal server errors, no matter if the debug setting was disabled.\n\nE.g. when paging with negative numbers in some apis\n\n\n",
  "id": "GHSA-77gj-crhp-3gvx",
  "modified": "2024-09-17T16:24:34Z",
  "published": "2024-08-20T18:25:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-77gj-crhp-3gvx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43376"
    },
    {
      "type": "WEB",
      "url": "https://github.com/umbraco/Umbraco-CMS/commit/b76070c794925932cb159ef50b851db6e966a004"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/umbraco/Umbraco-CMS"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Umbraco CMS vulnerable to Generation of Error Message Containing Sensitive Information"
}

GHSA-77HQ-CRR3-X6HC

Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2025-09-25 18:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

ASoC: SOF: Fix DSP oops stack dump output contents

Fix @buf arg given to hex_dump_to_buffer() and stack address used in dump error output.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-47381"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:23Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: Fix DSP oops stack dump output contents\n\nFix @buf arg given to hex_dump_to_buffer() and stack address used\nin dump error output.",
  "id": "GHSA-77hq-crr3-x6hc",
  "modified": "2025-09-25T18:30:28Z",
  "published": "2024-05-21T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47381"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6bb576ead074ca6fa3b53cb1c5d4037a23de81b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac4dfccb96571ca03af7cac64b7a0b2952c97f3a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-77PM-W3HX-F8MJ

Vulnerability from github – Published: 2024-12-23 18:30 – Updated: 2024-12-26 20:09
VLAI
Summary
Apache Hive and Spark: CookieSigner exposes the correct signature when message verification fails
Details

Signing cookies is an application security feature that adds a digital signature to cookie data to verify its authenticity and integrity. The signature helps prevent malicious actors from modifying the cookie value, which can lead to security vulnerabilities and exploitation. Apache Hive’s service component accidentally exposes the signed cookie to the end user when there is a mismatch in signature between the current and expected cookie. Exposing the correct cookie signature can lead to further exploitation.

The vulnerable CookieSigner logic was introduced in Apache Hive by HIVE-9710 (1.2.0) and in Apache Spark by SPARK-14987 (2.0.0). The affected components are the following: * org.apache.hive:hive-service * org.apache.spark:spark-hive-thriftserver_2.11 * org.apache.spark:spark-hive-thriftserver_2.12

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.hive:hive-service"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.2.0"
            },
            {
              "fixed": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.spark:spark-hive-thriftserver_2.11"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.4.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.spark:spark-hive-thriftserver_2.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-23945"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-12-23T21:14:54Z",
    "nvd_published_at": "2024-12-23T16:15:05Z",
    "severity": "HIGH"
  },
  "details": "Signing cookies is an application security feature that adds a digital signature to cookie data to verify its authenticity and integrity. The signature helps prevent malicious actors from modifying the cookie value, which can lead to security vulnerabilities and exploitation. Apache Hive\u2019s service component accidentally exposes the signed cookie to the end user when there is a mismatch in signature between the current and expected cookie. Exposing the correct cookie signature can lead to further exploitation.\n\nThe vulnerable CookieSigner logic was introduced in Apache Hive by\u00a0HIVE-9710 (1.2.0) and in Apache Spark by SPARK-14987 (2.0.0). The affected components are the following:\n* org.apache.hive:hive-service\n* org.apache.spark:spark-hive-thriftserver_2.11\n* org.apache.spark:spark-hive-thriftserver_2.12",
  "id": "GHSA-77pm-w3hx-f8mj",
  "modified": "2024-12-26T20:09:20Z",
  "published": "2024-12-23T18:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-23945"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/hive/commit/7638cb1a3b07713cc490aa2909a37037f89e08b4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/spark/commit/cf59b1f51c16301f689b4e0f17ba4dbd140e1b19"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/hive"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/spark"
    },
    {
      "type": "WEB",
      "url": "https://issues.apache.org/jira/browse/HIVE-9710"
    },
    {
      "type": "WEB",
      "url": "https://issues.apache.org/jira/browse/SPARK-14987"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/59r4mv7glrxpwkkdjvjbdljfpx3f5zzc"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/5o2ljnzrv8zvhjw9vy7b4rwjpc32hgfc"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/12/23/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache Hive and Spark: CookieSigner exposes the correct signature when message verification fails"
}

GHSA-79MG-HFRX-5889

Vulnerability from github – Published: 2025-02-18 06:35 – Updated: 2026-04-08 18:33
VLAI
Details

The Actionwear products sync plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 2.3.0. This is due the composer-setup.php file being publicly accessible with 'display_errors' set to true. This makes it possible for unauthenticated attackers to retrieve the full path of the web application, which can be used to aid other attacks. The information displayed is not useful on its own, and requires another vulnerability to be present for damage to an affected website.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-13535"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209",
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-18T05:15:12Z",
    "severity": "MODERATE"
  },
  "details": "The Actionwear products sync plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 2.3.0. This is due the composer-setup.php file being publicly accessible with \u0027display_errors\u0027 set to true. This makes it possible for unauthenticated attackers to retrieve the full path of the web application, which can be used to aid other attacks. The information displayed is not useful on its own, and requires another vulnerability to be present for damage to an affected website.",
  "id": "GHSA-79mg-hfrx-5889",
  "modified": "2026-04-08T18:33:48Z",
  "published": "2025-02-18T06:35:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-13535"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/actionwear-products-sync/trunk/composer-setup.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3241824%40actionwear-products-sync\u0026new=3241824%40actionwear-products-sync\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6dbf9689-c812-4b7c-9df3-c4639aae3357?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-7C49-MCQP-M9WP

Vulnerability from github – Published: 2022-01-20 00:01 – Updated: 2022-01-27 00:03
VLAI
Details

A Generation of Error Message Containing Sensitive Information vulnerability in the CLI of Juniper Networks Junos OS allows a locally authenticated attacker with low privileges to elevate these to the level of any other user logged in via J-Web at this time, potential leading to a full compromise of the device. This issue affects Juniper Networks Junos OS: All versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R2-S9, 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-22162"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-19T01:15:00Z",
    "severity": "HIGH"
  },
  "details": "A Generation of Error Message Containing Sensitive Information vulnerability in the CLI of Juniper Networks Junos OS allows a locally authenticated attacker with low privileges to elevate these to the level of any other user logged in via J-Web at this time, potential leading to a full compromise of the device. This issue affects Juniper Networks Junos OS: All versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R2-S9, 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2.",
  "id": "GHSA-7c49-mcqp-m9wp",
  "modified": "2022-01-27T00:03:50Z",
  "published": "2022-01-20T00:01:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-22162"
    },
    {
      "type": "WEB",
      "url": "https://kb.juniper.net/JSA11270"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-7C6M-W964-4JJH

Vulnerability from github – Published: 2022-04-30 18:15 – Updated: 2022-04-30 18:15
VLAI
Details

htsearch program in htDig 3.2 beta, 3.1.6, 3.1.5, and earlier allows remote attackers to determine the physical path of the server by requesting a non-existent configuration file using the config parameter, which generates an error message that includes the full path.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2000-1191"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2001-08-31T04:00:00Z",
    "severity": "MODERATE"
  },
  "details": "htsearch program in htDig 3.2 beta, 3.1.6, 3.1.5, and earlier allows remote attackers to determine the physical path of the server by requesting a non-existent configuration file using the config parameter, which generates an error message that includes the full path.",
  "id": "GHSA-7c6m-w964-4jjh",
  "modified": "2022-04-30T18:15:05Z",
  "published": "2022-04-30T18:15:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2000-1191"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/7367"
    },
    {
      "type": "WEB",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10526"
    },
    {
      "type": "WEB",
      "url": "http://www.securiteam.com/exploits/htDig_reveals_web_server_configuration_paths.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/4366"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-7CX8-44FW-PWW4

Vulnerability from github – Published: 2022-08-11 00:00 – Updated: 2022-08-14 00:00
VLAI
Details

IBM InfoSphere Information Server 11.7 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in a stack trace. This information could be used in further attacks against the system. IBM X-Force ID: 231202.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-35715"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-10T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "IBM InfoSphere Information Server 11.7 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in a stack trace. This information could be used in further attacks against the system. IBM X-Force ID: 231202.",
  "id": "GHSA-7cx8-44fw-pww4",
  "modified": "2022-08-14T00:00:23Z",
  "published": "2022-08-11T00:00:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35715"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/231202"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/6610883"
    }
  ],
  "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-7FQ3-F4X6-FMG6

Vulnerability from github – Published: 2022-05-24 17:32 – Updated: 2022-05-24 17:32
VLAI
Details

IBM Security Directory Server 6.4.0 generates an error message that includes sensitive information about its environment, users, or associated data. IBM X-Force ID: 165949.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2019-4547"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-10-29T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "IBM Security Directory Server 6.4.0 generates an error message that includes sensitive information about its environment, users, or associated data. IBM X-Force ID: 165949.",
  "id": "GHSA-7fq3-f4x6-fmg6",
  "modified": "2022-05-24T17:32:14Z",
  "published": "2022-05-24T17:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-4547"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/165949"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/6356607"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-7FV4-25H2-46HC

Vulnerability from github – Published: 2023-07-13 12:30 – Updated: 2024-04-04 06:07
VLAI
Details

Server information leak of configuration data when an error is generated in response to a specially crafted message.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-25948"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209",
      "CWE-394"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-13T12:15:09Z",
    "severity": "HIGH"
  },
  "details": "Server information leak of configuration data when an error is generated in response to a specially crafted message.",
  "id": "GHSA-7fv4-25h2-46hc",
  "modified": "2024-04-04T06:07:08Z",
  "published": "2023-07-13T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25948"
    },
    {
      "type": "WEB",
      "url": "https://process.honeywell.com"
    }
  ],
  "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-7GHP-CHHF-MV7G

Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2022-05-24 17:36
VLAI
Details

IBM Financial Transaction Manager for SWIFT Services for Multiplatforms 3.2.4 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-4907"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-16T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "IBM Financial Transaction Manager for SWIFT Services for Multiplatforms 3.2.4 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system.",
  "id": "GHSA-7ghp-chhf-mv7g",
  "modified": "2022-05-24T17:36:44Z",
  "published": "2022-05-24T17:36:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-4907"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/191112"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/6371260"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Mitigation MIT-39
Implementation
  • Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
  • If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
  • Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
Mitigation
Implementation

Handle exceptions internally and do not display errors containing potentially sensitive information to a user.

Mitigation MIT-33
Implementation

Strategy: Attack Surface Reduction

Use naming conventions and strong types to make it easier to spot when sensitive data is being used. When creating structures, objects, or other complex entities, separate the sensitive and non-sensitive data as much as possible.

Mitigation MIT-40
Implementation Build and Compilation

Strategy: Compilation or Build Hardening

Debugging information should not make its way into a production release.

Mitigation MIT-40
Implementation Build and Compilation

Strategy: Environment Hardening

Debugging information should not make its way into a production release.

Mitigation
System Configuration

Where available, configure the environment to use less verbose error messages. For example, in PHP, disable the display_errors setting during configuration, or at runtime using the error_reporting() function.

Mitigation
System Configuration

Create default error pages or messages that do not leak any information.

CAPEC-215: Fuzzing for application mapping

An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash.

CAPEC-463: Padding Oracle Crypto Attack

An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.

CAPEC-54: Query System for Information

An adversary, aware of an application's location (and possibly authorized to use the application), probes an application's structure and evaluates its robustness by submitting requests and examining responses. Often, this is accomplished by sending variants of expected queries in the hope that these modified queries might return information beyond what the expected set of queries would provide.

CAPEC-7: Blind SQL Injection

Blind SQL Injection results from an insufficient mitigation for SQL Injection. Although suppressing database error messages are considered best practice, the suppression alone is not sufficient to prevent SQL Injection. Blind SQL Injection is a form of SQL Injection that overcomes the lack of error messages. Without the error messages that facilitate SQL Injection, the adversary constructs input strings that probe the target through simple Boolean SQL expressions. The adversary can determine if the syntax and structure of the injection was successful based on whether the query was executed or not. Applied iteratively, the adversary determines how and where the target is vulnerable to SQL Injection.