Common Weakness Enumeration

CWE-77

Allowed-with-Review

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Abstraction: Class · Status: Draft

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

5381 vulnerabilities reference this CWE, most recent first.

GHSA-F5CC-CQ8V-8VMJ

Vulnerability from github – Published: 2024-01-10 21:31 – Updated: 2024-01-17 21:30
VLAI
Details

Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrary commands via the value parameter.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-51126"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-01-10T21:15:09Z",
    "severity": "CRITICAL"
  },
  "details": "Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrary commands via the value parameter.",
  "id": "GHSA-f5cc-cq8v-8vmj",
  "modified": "2024-01-17T21:30:20Z",
  "published": "2024-01-10T21:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51126"
    },
    {
      "type": "WEB",
      "url": "https://github.com/risuxx/CVE-2023-51126"
    }
  ],
  "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-F5F5-FVM4-P475

Vulnerability from github – Published: 2023-06-13 00:30 – Updated: 2024-04-04 04:44
VLAI
Details

Previous versions of HP Device Manager (prior to HPDM 5.0.10) could potentially allow command injection and/or elevation of privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-26295"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-06-12T22:15:09Z",
    "severity": "CRITICAL"
  },
  "details": "Previous versions of HP Device Manager (prior to HPDM 5.0.10) could potentially allow command injection and/or elevation of privileges.",
  "id": "GHSA-f5f5-fvm4-p475",
  "modified": "2024-04-04T04:44:37Z",
  "published": "2023-06-13T00:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26295"
    },
    {
      "type": "WEB",
      "url": "https://support.hp.com/us-en/document/ish_7974907-7974931-16/hpsbhf03842"
    }
  ],
  "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-F5Q9-J9R2-34GQ

Vulnerability from github – Published: 2022-12-30 12:30 – Updated: 2023-01-10 16:13
VLAI
Summary
Apache Kylin vulnerable to Command injection by Useless configuration
Details

In the fix for CVE-2022-24697, a blacklist is used to filter user input commands. But there is a risk of being bypassed. The user can control the command by controlling the kylin.engine.spark-cmd parameter of conf.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.kylin:kylin"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "4.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-43396"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-184",
      "CWE-77"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-01-03T12:34:52Z",
    "nvd_published_at": "2022-12-30T11:15:00Z",
    "severity": "HIGH"
  },
  "details": "In the fix for CVE-2022-24697, a blacklist is used to filter user input commands. But there is a risk of being bypassed. The user can control the command by controlling the `kylin.engine.spark-cmd` parameter of `conf`.",
  "id": "GHSA-f5q9-j9r2-34gq",
  "modified": "2023-01-10T16:13:03Z",
  "published": "2022-12-30T12:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43396"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/kylin/pull/2011"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/ob2ks04zl5ms0r44cd74y1xdl1rzfd1r"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Kylin vulnerable to Command injection by Useless configuration"
}

GHSA-F66V-3757-HPPX

Vulnerability from github – Published: 2022-05-05 00:00 – Updated: 2022-05-12 00:01
VLAI
Details

Fusionpbx v4.4 and below contains a command injection vulnerability via the download email logs function.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-28055"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-05-04T03:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Fusionpbx v4.4 and below contains a command injection vulnerability via the download email logs function.",
  "id": "GHSA-f66v-3757-hppx",
  "modified": "2022-05-12T00:01:23Z",
  "published": "2022-05-05T00:00:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28055"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fusionpbx/fusionpbx/commit/4e260b170e17705c4c9ccf787be7711b63a40868"
    }
  ],
  "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-F698-M2V9-5FH3

Vulnerability from github – Published: 2019-06-04 20:11 – Updated: 2020-08-31 18:35
VLAI
Summary
Command Injection in opencv
Details

Versions of opencvprior to 6.1.0 are vulnerable to Command Injection. The utils/ script find-opencv.js does not validate user input allowing attackers to execute arbitrary commands.

Recommendation

Upgrade to version 6.1.0.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "opencv"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2019-06-04T20:11:26Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "Versions of `opencv`prior to 6.1.0 are vulnerable to Command Injection. The utils/ script find-opencv.js does not validate user input allowing attackers to execute arbitrary commands.\n\n\n## Recommendation\n\nUpgrade to version 6.1.0.\n",
  "id": "GHSA-f698-m2v9-5fh3",
  "modified": "2020-08-31T18:35:50Z",
  "published": "2019-06-04T20:11:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/peterbraden/node-opencv/commit/81a4b8620188e89f7e4fc985f3c89b58d4bcc86b#diff-dab2f6d17b2fd005a9425e97172dc8cb"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/789"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Command Injection in opencv"
}

GHSA-F69V-GCJ6-MHMX

Vulnerability from github – Published: 2023-07-11 12:30 – Updated: 2024-04-04 05:55
VLAI
Details

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.16.0), RUGGEDCOM ROX MX5000RE (All versions < V2.16.0), RUGGEDCOM ROX RX1400 (All versions < V2.16.0), RUGGEDCOM ROX RX1500 (All versions < V2.16.0), RUGGEDCOM ROX RX1501 (All versions < V2.16.0), RUGGEDCOM ROX RX1510 (All versions < V2.16.0), RUGGEDCOM ROX RX1511 (All versions < V2.16.0), RUGGEDCOM ROX RX1512 (All versions < V2.16.0), RUGGEDCOM ROX RX1524 (All versions < V2.16.0), RUGGEDCOM ROX RX1536 (All versions < V2.16.0), RUGGEDCOM ROX RX5000 (All versions < V2.16.0). The software-upgrade Url parameter in the web interface of affected devices is vulnerable to command injection due to missing server side input sanitation. This could allow an authenticated privileged remote attacker to execute arbitrary code with root privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-36750"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-11T10:15:11Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions \u003c V2.16.0), RUGGEDCOM ROX MX5000RE (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1400 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1500 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1501 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1510 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1511 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1512 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1524 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX1536 (All versions \u003c V2.16.0), RUGGEDCOM ROX RX5000 (All versions \u003c V2.16.0). The software-upgrade Url parameter in the web interface of affected devices is vulnerable to command injection due to missing server side input sanitation. This could allow an authenticated privileged remote attacker to execute arbitrary code with root privileges.",
  "id": "GHSA-f69v-gcj6-mhmx",
  "modified": "2024-04-04T05:55:40Z",
  "published": "2023-07-11T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36750"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-146325.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F6GR-J665-X2PQ

Vulnerability from github – Published: 2022-09-17 00:00 – Updated: 2026-07-05 03:30
VLAI
Details

Super Flexible Software GmbH & Co. KG Syncovery 9 for Linux v9.47x and below was discovered to contain multiple remote code execution (RCE) vulnerabilities via the Job_ExecuteBefore and Job_ExecuteAfter parameters at post_profilesettings.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-36534"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-09-16T03:15:00Z",
    "severity": "HIGH"
  },
  "details": "Super Flexible Software GmbH \u0026 Co. KG Syncovery 9 for Linux v9.47x and below was discovered to contain multiple remote code execution (RCE) vulnerabilities via the Job_ExecuteBefore and Job_ExecuteAfter parameters at post_profilesettings.php.",
  "id": "GHSA-f6gr-j665-x2pq",
  "modified": "2026-07-05T03:30:51Z",
  "published": "2022-09-17T00:00:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36534"
    },
    {
      "type": "WEB",
      "url": "https://www.mgm-sp.com/en/multiple-vulnerabilities-in-syncovery-for-linux"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/170245/Syncovery-For-Linux-Web-GUI-Authenticated-Remote-Command-Execution.html"
    },
    {
      "type": "WEB",
      "url": "http://super.com"
    },
    {
      "type": "WEB",
      "url": "http://syncovery.com"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F6XW-JPR8-C7PH

Vulnerability from github – Published: 2023-02-27 18:32 – Updated: 2023-03-07 21:30
VLAI
Details

There is a system command injection vulnerability in BiSheng-WNM FW 3.0.0.325. Successful exploitation could allow attackers to gain higher privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-48259"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-02-27T18:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "There is a system command injection vulnerability in BiSheng-WNM FW 3.0.0.325. Successful exploitation could allow attackers to gain higher privileges.",
  "id": "GHSA-f6xw-jpr8-c7ph",
  "modified": "2023-03-07T21:30:18Z",
  "published": "2023-02-27T18:32:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48259"
    },
    {
      "type": "WEB",
      "url": "https://www.huawei.com/en/psirt/security-advisories/2023/huawei-sa-sciviahpp-4181d272-en"
    }
  ],
  "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-F729-P9C9-FM58

Vulnerability from github – Published: 2025-12-09 18:30 – Updated: 2025-12-09 18:30
VLAI
Details

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-40937"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T16:17:47Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments.\nThis could allow an authenticated attacker to execute arbitrary code with limited privileges.",
  "id": "GHSA-f729-p9c9-fm58",
  "modified": "2025-12-09T18:30:36Z",
  "published": "2025-12-09T18:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40937"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-416652.html"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/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-F752-H5RP-H694

Vulnerability from github – Published: 2026-01-29 00:31 – Updated: 2026-01-29 00:31
VLAI
Details

A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published and may be used.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-1548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-74",
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-28T23:15:50Z",
    "severity": "MODERATE"
  },
  "details": "A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published and may be used.",
  "id": "GHSA-f752-h5rp-h694",
  "modified": "2026-01-29T00:31:11Z",
  "published": "2026-01-29T00:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1548"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md#poc"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.343232"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.343232"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.739715"
    },
    {
      "type": "WEB",
      "url": "https://www.totolink.net"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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"
    }
  ]
}

Mitigation
Architecture and Design

If at all possible, use library calls rather than external processes to recreate the desired functionality.

Mitigation
Implementation

If possible, ensure that all external commands called from the program are statically created.

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation
Operation

Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.

Mitigation
System Configuration

Assign permissions that prevent the user from accessing/opening privileged files.

CAPEC-136: LDAP Injection

An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value.

CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

CAPEC-183: IMAP/SMTP Command Injection

An adversary exploits weaknesses in input validation on web-mail servers to execute commands on the IMAP/SMTP server. Web-mail servers often sit between the Internet and the IMAP or SMTP mail server. User requests are received by the web-mail servers which then query the back-end mail server for the requested information and return this response to the user. In an IMAP/SMTP command injection attack, mail-server commands are embedded in parts of the request sent to the web-mail server. If the web-mail server fails to adequately sanitize these requests, these commands are then sent to the back-end mail server when it is queried by the web-mail server, where the commands are then executed. This attack can be especially dangerous since administrators may assume that the back-end server is protected against direct Internet access and therefore may not secure it adequately against the execution of malicious commands.

CAPEC-248: Command Injection

An adversary looking to execute a command of their choosing, injects new items into an existing command thus modifying interpretation away from what was intended. Commands in this context are often standalone strings that are interpreted by a downstream component and cause specific responses. This type of attack is possible when untrusted values are used to build these command strings. Weaknesses in input validation or command construction can enable the attack and lead to successful exploitation.

CAPEC-40: Manipulating Writeable Terminal Devices

This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded.

CAPEC-43: Exploiting Multiple Input Interpretation Layers

An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: <parser1> --> <input validator> --> <parser2>. In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.

CAPEC-75: Manipulating Writeable Configuration Files

Generally these are manually edited files that are not in the preview of the system administrators, any ability on the attackers' behalf to modify these files, for example in a CVS repository, gives unauthorized access directly to the application, the same as authorized users.

CAPEC-76: Manipulating Web Input to File System Calls

An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.