Common Weakness Enumeration

CWE-276

Allowed

Incorrect Default Permissions

Abstraction: Base · Status: Draft

During installation, installed file permissions are set to allow anyone to modify those files.

2043 vulnerabilities reference this CWE, most recent first.

GHSA-589Q-75R3-MFQ4

Vulnerability from github – Published: 2022-05-24 17:23 – Updated: 2023-07-20 11:13
VLAI
Summary
Silverstripe has Incorrect Default Permissions
Details

SilverStripe 4.5.0 allows attackers to read certain records that should not have been placed into a result set. This affects silverstripe/recipe-cms. The automatic permission-checking mechanism in the silverstripe/graphql module does not provide complete protection against lists that are limited (e.g., through pagination), resulting in records that should have failed a permission check being added to the final result set. GraphQL endpoints are configured by default (e.g., for assets), but the admin/graphql endpoint is access protected by default. This limits the vulnerability to all authenticated users, including those with limited permissions (e.g., where viewing records exposed through admin/graphql requires administrator permissions). However, if custom GraphQL endpoints have been configured for a specific implementation (usually under /graphql), this vulnerability could also be exploited through unauthenticated requests. This vulnerability only applies to reading records; it does not allow unauthorised changing of records.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "silverstripe/recipe-cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.5.0"
            },
            {
              "fixed": "4.5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "silverstripe/graphql"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "fixed": "3.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-6165"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-20T11:13:08Z",
    "nvd_published_at": "2020-07-15T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "SilverStripe 4.5.0 allows attackers to read certain records that should not have been placed into a result set. This affects silverstripe/recipe-cms. The automatic permission-checking mechanism in the silverstripe/graphql module does not provide complete protection against lists that are limited (e.g., through pagination), resulting in records that should have failed a permission check being added to the final result set. GraphQL endpoints are configured by default (e.g., for assets), but the admin/graphql endpoint is access protected by default. This limits the vulnerability to all authenticated users, including those with limited permissions (e.g., where viewing records exposed through admin/graphql requires administrator permissions). However, if custom GraphQL endpoints have been configured for a specific implementation (usually under /graphql), this vulnerability could also be exploited through unauthenticated requests. This vulnerability only applies to reading records; it does not allow unauthorised changing of records.",
  "id": "GHSA-589q-75r3-mfq4",
  "modified": "2023-07-20T11:13:08Z",
  "published": "2022-05-24T17:23:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6165"
    },
    {
      "type": "WEB",
      "url": "https://docs.silverstripe.org/en/4/changelogs/4.5.3/?_ga=2.170693920.105499209.1689776417-708940272.1689776417"
    },
    {
      "type": "WEB",
      "url": "https://docs.silverstripe.org/en/4/changelogs/4.6.0/?_ga=2.170693920.105499209.1689776417-708940272.1689776417"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2020-6165.yaml"
    },
    {
      "type": "WEB",
      "url": "https://www.silverstripe.org/download/security-releases/CVE-2020-6165"
    }
  ],
  "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"
    }
  ],
  "summary": "Silverstripe has Incorrect Default Permissions "
}

GHSA-58J4-VM73-HGVH

Vulnerability from github – Published: 2026-06-22 15:30 – Updated: 2026-06-22 15:30
VLAI
Details

Incorrect default permissions in ArubaSign, affecting versions prior to v4.6.6. The vulnerability is caused by the assignment of inappropriate permissions during the software’s default installation, whereby the main executable and other programme files located in C:\Program Files have excessive permissions for the ‘Everyone’ group. This could allow an unprivileged user to replace the main executable and/or its components with a malicious file, thereby enabling the execution of arbitrary code. In the worst-case scenario, if the malicious code is executed with elevated privileges (such as those of Administrator or SYSTEM), the attacker could escalate privileges and gain full control of the system, compromising both security and data integrity.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-12602"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-22T14:16:27Z",
    "severity": "HIGH"
  },
  "details": "Incorrect default permissions in ArubaSign, affecting versions prior to v4.6.6. The vulnerability is caused by the assignment of inappropriate permissions during the software\u2019s default installation, whereby the main executable and other programme files located in C:\\Program Files have excessive permissions for the \u2018Everyone\u2019 group. This could allow an unprivileged user to replace the main executable and/or its components with a malicious file, thereby enabling the execution of arbitrary code. In the worst-case scenario, if the malicious code is executed with elevated privileges (such as those of Administrator or SYSTEM), the attacker could escalate privileges and gain full control of the system, compromising both security and data integrity.",
  "id": "GHSA-58j4-vm73-hgvh",
  "modified": "2026-06-22T15:30:43Z",
  "published": "2026-06-22T15:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12602"
    },
    {
      "type": "WEB",
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-permissions-arubasign-aruba"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-58JH-XRF3-5PP9

Vulnerability from github – Published: 2023-05-04 21:30 – Updated: 2024-04-04 03:48
VLAI
Details

An issue was discovered in GeoVision GV-Edge Recording Manager 2.2.3.0 for windows, which contains improper permissions within the default installation and allows attackers to execute arbitrary code and gain escalated privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-23059"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-05-04T20:15:09Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in GeoVision GV-Edge Recording Manager 2.2.3.0 for windows, which contains improper permissions within the default installation and allows attackers to execute arbitrary code and gain escalated privileges.",
  "id": "GHSA-58jh-xrf3-5pp9",
  "modified": "2024-04-04T03:48:08Z",
  "published": "2023-05-04T21:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23059"
    },
    {
      "type": "WEB",
      "url": "https://packetstormsecurity.com/files/172141/GV-Edge-Recording-Manager-2.2.3.0-Privilege-Escalation.html"
    },
    {
      "type": "WEB",
      "url": "http://geovision.com"
    },
    {
      "type": "WEB",
      "url": "http://gv-edge.com"
    }
  ],
  "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"
    }
  ]
}

GHSA-58JP-6F6M-4V4F

Vulnerability from github – Published: 2026-05-20 18:31 – Updated: 2026-05-20 18:31
VLAI
Details

Incorrect default permissions vulnerability in Progress Software MOVEit Automation allows Retrieve Embedded Sensitive Data.

This issue affects MOVEit Automation: before 2025.0.11, from 2025.1.0 before 2025.1.7.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-8487"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-20T16:16:27Z",
    "severity": "MODERATE"
  },
  "details": "Incorrect default permissions vulnerability in Progress Software MOVEit Automation allows Retrieve Embedded Sensitive Data.\n\nThis issue affects MOVEit Automation: before 2025.0.11, from 2025.1.0 before 2025.1.7.",
  "id": "GHSA-58jp-6f6m-4v4f",
  "modified": "2026-05-20T18:31:35Z",
  "published": "2026-05-20T18:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8487"
    },
    {
      "type": "WEB",
      "url": "https://docs.progress.com/bundle/moveit-automation-release-notes-2026/page/Fixed-Issues-2026.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5946-MPW5-PQXX

Vulnerability from github – Published: 2022-02-21 00:00 – Updated: 2024-09-13 18:30
VLAI
Summary
Incorrect Default Permissions in Cobbler
Details

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "cobbler"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-45083"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-08T18:49:35Z",
    "nvd_published_at": "2022-02-20T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it\u0027s trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.",
  "id": "GHSA-5946-mpw5-pqxx",
  "modified": "2024-09-13T18:30:44Z",
  "published": "2022-02-21T00:00:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45083"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cobbler/cobbler/pull/2945"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cobbler/cobbler/commit/10b2112db83fedfc391e900edfedc2b4e507d3f7"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1193671"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-5946-mpw5-pqxx"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cobbler/cobbler"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cobbler/cobbler/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cobbler/cobbler/releases/tag/v3.3.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/cobbler/PYSEC-2022-38.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TEJN7CPW6YCHBFQPFZKGA6AVA6T5NPIW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z5CSXQE7Q4TVDQJKFYBO4XDH3BZ7BLAR"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZCXMOUW4DH4DYWIJN44SMSU6R3CZDZBE"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2022/02/18/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Incorrect Default Permissions in Cobbler"
}

GHSA-595X-PQ6P-X7X2

Vulnerability from github – Published: 2022-05-24 16:58 – Updated: 2024-04-04 02:13
VLAI
Details

Kramer VIAware 2.5.0719.1034 has Incorrect Access Control.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2019-17124"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-10-09T16:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Kramer VIAware 2.5.0719.1034 has Incorrect Access Control.",
  "id": "GHSA-595x-pq6p-x7x2",
  "modified": "2024-04-04T02:13:05Z",
  "published": "2022-05-24T16:58:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17124"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hessandrew/CVE-2019-17124"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/166541/Kramer-VIAware-2.5.0719.1034-Remote-Code-Execution.html"
    }
  ],
  "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"
    }
  ]
}

GHSA-5967-3M2H-JXRG

Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2022-07-13 00:00
VLAI
Details

Insecure File Permissions exist in Aviatrix Controller 5.3.1516. Several world writable files and directories were found in the controller resource. Note: All Aviatrix appliances are fully encrypted. This is an extra layer of security.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-27568"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-21T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "Insecure File Permissions exist in Aviatrix Controller 5.3.1516. Several world writable files and directories were found in the controller resource. Note: All Aviatrix appliances are fully encrypted. This is an extra layer of security.",
  "id": "GHSA-5967-3m2h-jxrg",
  "modified": "2022-07-13T00:00:50Z",
  "published": "2022-05-24T17:48:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27568"
    },
    {
      "type": "WEB",
      "url": "https://docs.aviatrix.com/HowTos/security_bulletin_article.html#insecure-file-permissions"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-59XX-G8CV-87QW

Vulnerability from github – Published: 2024-10-28 18:31 – Updated: 2024-11-05 18:32
VLAI
Details

VINCE versions before 3.0.9 is vulnerable to exposure of User information to authenticated users.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-10469"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-28T16:15:03Z",
    "severity": "MODERATE"
  },
  "details": "VINCE versions before 3.0.9 is vulnerable to exposure of User information to authenticated users.",
  "id": "GHSA-59xx-g8cv-87qw",
  "modified": "2024-11-05T18:32:02Z",
  "published": "2024-10-28T18:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10469"
    },
    {
      "type": "WEB",
      "url": "https://github.com/CERTCC/VINCE"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5C86-GPVC-FP53

Vulnerability from github – Published: 2023-04-19 15:30 – Updated: 2023-04-28 20:08
VLAI
Summary
PowerJob vulnerable to Insecure Permissions
Details

PowerJob V4.3.1 is vulnerable to Insecure Permissions via the list job interface.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "tech.powerjob:powerjob"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-29923"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-04-21T20:16:20Z",
    "nvd_published_at": "2023-04-19T14:15:07Z",
    "severity": "MODERATE"
  },
  "details": "PowerJob V4.3.1 is vulnerable to Insecure Permissions via the list job interface.",
  "id": "GHSA-5c86-gpvc-fp53",
  "modified": "2023-04-28T20:08:27Z",
  "published": "2023-04-19T15:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29923"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PowerJob/PowerJob/issues/587"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PowerJob/PowerJob"
    }
  ],
  "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"
    }
  ],
  "summary": "PowerJob vulnerable to Insecure Permissions"
}

GHSA-5CV5-PC9W-5HGP

Vulnerability from github – Published: 2024-08-16 15:31 – Updated: 2024-08-16 15:31
VLAI
Details

An insecure driver vulnerability was reported in Lenovo Display Control Center (LDCC) and Lenovo Accessories and Display Manager (LADM)

that could allow a local attacker to escalate privileges to kernel.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-4763"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-16T15:15:30Z",
    "severity": "HIGH"
  },
  "details": "An insecure driver vulnerability was reported in\u00a0Lenovo Display Control Center (LDCC) and Lenovo Accessories and Display Manager (LADM)\n\n that could allow a local attacker to escalate privileges to kernel.",
  "id": "GHSA-5cv5-pc9w-5hgp",
  "modified": "2024-08-16T15:31:42Z",
  "published": "2024-08-16T15:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4763"
    },
    {
      "type": "WEB",
      "url": "https://support.lenovo.com/us/en/product_security/LEN-155486"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation MIT-1
Architecture and Design Operation

The architecture needs to access and modification attributes for files to only those users who actually require those actions.

Mitigation MIT-46
Architecture and Design

Strategy: Separation of Privilege

  • Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs

In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

CAPEC-127: Directory Indexing

An adversary crafts a request to a target that results in the target listing/indexing the content of a directory as output. One common method of triggering directory contents as output is to construct a request containing a path that terminates in a directory name rather than a file name since many applications are configured to provide a list of the directory's contents when such a request is received. An adversary can use this to explore the directory tree on a target as well as learn the names of files. This can often end up revealing test files, backup files, temporary files, hidden files, configuration files, user accounts, script contents, as well as naming conventions, all of which can be used by an attacker to mount additional attacks.

CAPEC-81: Web Server Logs Tampering

Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.