CWE-77
Allowed-with-ReviewImproper 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.
5386 vulnerabilities reference this CWE, most recent first.
GHSA-QMW4-R53X-3938
Vulnerability from github – Published: 2023-07-11 12:30 – Updated: 2024-04-04 05:55A 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 uninstall-app App-name 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.
{
"affected": [],
"aliases": [
"CVE-2023-36753"
],
"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 uninstall-app App-name 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-qmw4-r53x-3938",
"modified": "2024-04-04T05:55:50Z",
"published": "2023-07-11T12:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36753"
},
{
"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-QMWJ-94MW-66HF
Vulnerability from github – Published: 2025-08-13 18:31 – Updated: 2025-08-13 21:30A zip slip vulnerability in the /modules/ImportModule.php component of hortusfox-web v4.4 allows attackers to execute arbitrary code via a crafted archive.
{
"affected": [],
"aliases": [
"CVE-2025-45317"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-13T18:15:31Z",
"severity": "MODERATE"
},
"details": "A zip slip vulnerability in the /modules/ImportModule.php component of hortusfox-web v4.4 allows attackers to execute arbitrary code via a crafted archive.",
"id": "GHSA-qmwj-94mw-66hf",
"modified": "2025-08-13T21:30:28Z",
"published": "2025-08-13T18:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-45317"
},
{
"type": "WEB",
"url": "https://github.com/chrisWalker11/Cves/blob/main/CVE-2025-45317/CVE-2025-45317.md"
},
{
"type": "WEB",
"url": "https://github.com/danielbrendel/hortusfox-web/blob/8ab851101a62d8eb311235c118eeeb32a9b36978/app/modules/ImportModule.php#L28"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QP5F-6G86-H75X
Vulnerability from github – Published: 2022-06-12 00:00 – Updated: 2022-06-18 00:00ZeroShell 3.9.5 has a command injection vulnerability in /cgi-bin/kerbynet IP parameter, which may allow an authenticated attacker to execute system commands.
{
"affected": [],
"aliases": [
"CVE-2021-41738"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-11T14:15:00Z",
"severity": "HIGH"
},
"details": "ZeroShell 3.9.5 has a command injection vulnerability in /cgi-bin/kerbynet IP parameter, which may allow an authenticated attacker to execute system commands.",
"id": "GHSA-qp5f-6g86-h75x",
"modified": "2022-06-18T00:00:22Z",
"published": "2022-06-12T00:00:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41738"
},
{
"type": "WEB",
"url": "https://medium.com/@rootless724"
}
],
"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-QP62-JP68-8RX4
Vulnerability from github – Published: 2022-05-24 19:17 – Updated: 2022-10-24 19:00A command injection vulnerability in sftp command processing on Juniper Networks Junos OS Evolved allows an attacker with authenticated CLI access to be able to bypass configured access protections to execute arbitrary shell commands within the context of the current user. The vulnerability allows an attacker to bypass command authorization restrictions assigned to their specific user account and execute commands that are available to the privilege level for which the user is assigned. For example, a user that is in the super-user login class, but restricted to executing specific CLI commands could exploit the vulnerability to execute any other command available to an unrestricted admin user. This vulnerability does not increase the privilege level of the user, but rather bypasses any CLI command restrictions by allowing full access to the shell. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S2-EVO; 21.1 versions prior to 21.1R2-EVO; 21.2 versions prior to 21.2R1-S1-EVO, 21.2R2-EVO.
{
"affected": [],
"aliases": [
"CVE-2021-31358"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-19T19:15:00Z",
"severity": "HIGH"
},
"details": "A command injection vulnerability in sftp command processing on Juniper Networks Junos OS Evolved allows an attacker with authenticated CLI access to be able to bypass configured access protections to execute arbitrary shell commands within the context of the current user. The vulnerability allows an attacker to bypass command authorization restrictions assigned to their specific user account and execute commands that are available to the privilege level for which the user is assigned. For example, a user that is in the super-user login class, but restricted to executing specific CLI commands could exploit the vulnerability to execute any other command available to an unrestricted admin user. This vulnerability does not increase the privilege level of the user, but rather bypasses any CLI command restrictions by allowing full access to the shell. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S2-EVO; 21.1 versions prior to 21.1R2-EVO; 21.2 versions prior to 21.2R1-S1-EVO, 21.2R2-EVO.",
"id": "GHSA-qp62-jp68-8rx4",
"modified": "2022-10-24T19:00:16Z",
"published": "2022-05-24T19:17:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31358"
},
{
"type": "WEB",
"url": "https://kb.juniper.net/JSA11221"
}
],
"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"
}
]
}
GHSA-QP64-FXM9-HXP3
Vulnerability from github – Published: 2025-05-20 21:30 – Updated: 2025-05-20 21:30A vulnerability was found in Linksys FGW3000-AH and FGW3000-HK up to 1.0.17.000000. It has been classified as critical. This affects the function control_panel_sw of the file /cgi-bin/sysconf.cgi of the component HTTP POST Request Handler. The manipulation of the argument filename leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-5000"
],
"database_specific": {
"cwe_ids": [
"CWE-74",
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-20T21:15:24Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in Linksys FGW3000-AH and FGW3000-HK up to 1.0.17.000000. It has been classified as critical. This affects the function control_panel_sw of the file /cgi-bin/sysconf.cgi of the component HTTP POST Request Handler. The manipulation of the argument filename leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-qp64-fxm9-hxp3",
"modified": "2025-05-20T21:30:44Z",
"published": "2025-05-20T21:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5000"
},
{
"type": "WEB",
"url": "https://github.com/CH13hh/tmp_store_cc/blob/main/FGW3000/2.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.309651"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.309651"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.565992"
},
{
"type": "WEB",
"url": "https://www.linksys.com"
}
],
"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: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-QPC3-8VQG-8G6W
Vulnerability from github – Published: 2026-04-03 06:31 – Updated: 2026-06-09 10:57Command injection vulnerability in console.run_module_with_output() in pymetasploit3 through version 1.0.6 allows attackers to inject newline characters into module options such as RHOSTS. This breaks the intended command structure and causes the Metasploit console to execute additional unintended commands, potentially leading to arbitrary command execution and manipulation of Metasploit sessions.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pymetasploit3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.0.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-5463"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-06T23:07:57Z",
"nvd_published_at": "2026-04-03T05:16:24Z",
"severity": "CRITICAL"
},
"details": "Command injection vulnerability in console.run_module_with_output() in pymetasploit3 through version 1.0.6 allows attackers to inject newline characters into module options such as RHOSTS. This breaks the intended command structure and causes the Metasploit console to execute additional unintended commands, potentially leading to arbitrary command execution and manipulation of Metasploit sessions.",
"id": "GHSA-qpc3-8vqg-8g6w",
"modified": "2026-06-09T10:57:06Z",
"published": "2026-04-03T06:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5463"
},
{
"type": "PACKAGE",
"url": "https://github.com/DanMcInerney/pymetasploit3"
},
{
"type": "WEB",
"url": "https://pypi.org/project/pymetasploit3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L",
"type": "CVSS_V4"
}
],
"summary": "pymetasploit3 vulnerable to command injection in console.run_module_with_output()"
}
GHSA-QPF2-W648-MR69
Vulnerability from github – Published: 2022-04-11 00:00 – Updated: 2022-04-19 00:01InHand Networks InRouter 900 Industrial 4G Router before v1.0.0.r11700 was discovered to contain a remote code execution (RCE) vulnerability via the function sub_1791C. This vulnerability is triggered via a crafted packet.
{
"affected": [],
"aliases": [
"CVE-2022-27272"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-10T21:15:00Z",
"severity": "CRITICAL"
},
"details": "InHand Networks InRouter 900 Industrial 4G Router before v1.0.0.r11700 was discovered to contain a remote code execution (RCE) vulnerability via the function sub_1791C. This vulnerability is triggered via a crafted packet.",
"id": "GHSA-qpf2-w648-mr69",
"modified": "2022-04-19T00:01:27Z",
"published": "2022-04-11T00:00:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27272"
},
{
"type": "WEB",
"url": "https://drive.google.com/drive/folders/1zJ2dGrKar-WTlYz13v1f0BIsoIm3aU0l?usp=sharing"
},
{
"type": "WEB",
"url": "https://github.com/wu610777031/IoT_Hunter/blob/main/Inhand%20InRouter%20900%20Industrial%204G%20Router%20%20Vulnerabilities(RCE).pdf"
}
],
"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-QPHF-G5J6-V3VF
Vulnerability from github – Published: 2022-10-24 19:00 – Updated: 2022-10-24 19:00Command injection and multiple stack-based buffer overflows vulnerabilities in the Login_handler_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.
{
"affected": [],
"aliases": [
"CVE-2021-26729"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-24T14:15:00Z",
"severity": "CRITICAL"
},
"details": "Command injection and multiple stack-based buffer overflows vulnerabilities in the Login_handler_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.",
"id": "GHSA-qphf-g5j6-v3vf",
"modified": "2022-10-24T19:00:17Z",
"published": "2022-10-24T19:00:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26729"
},
{
"type": "WEB",
"url": "https://github.com/CVEProject/cvelist/blob/master/2021/26xxx/CVE-2021-26729.json"
},
{
"type": "WEB",
"url": "https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1"
},
{
"type": "WEB",
"url": "https://www.nozominetworks.com/labs/vulnerability-advisories/CVE-2021-26729"
}
],
"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-QPPJ-MPVF-FHQG
Vulnerability from github – Published: 2025-05-05 18:32 – Updated: 2025-05-05 18:32NETGEAR RAX5 (AX1600 WiFi Router) V1.0.2.26 was discovered to contain a command injection vulnerability via the ifname parameter in the apcli_cancel_wps function.
{
"affected": [],
"aliases": [
"CVE-2024-57234"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-05T17:18:46Z",
"severity": "MODERATE"
},
"details": "NETGEAR RAX5 (AX1600 WiFi Router) V1.0.2.26 was discovered to contain a command injection vulnerability via the ifname parameter in the apcli_cancel_wps function.",
"id": "GHSA-qppj-mpvf-fhqg",
"modified": "2025-05-05T18:32:53Z",
"published": "2025-05-05T18:32:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57234"
},
{
"type": "WEB",
"url": "https://github.com/yanggao017/vuln/blob/main/NETGEAR/RAX5/CI_5_apcli_cancel_wps/README.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QPR8-XRX4-F6MX
Vulnerability from github – Published: 2022-05-24 17:40 – Updated: 2022-05-24 17:40In netdiag, there is a possible command injection due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11; Patch ID: ALPS05442014.
{
"affected": [],
"aliases": [
"CVE-2021-0356"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-03T00:15:00Z",
"severity": "MODERATE"
},
"details": "In netdiag, there is a possible command injection due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11; Patch ID: ALPS05442014.",
"id": "GHSA-qpr8-xrx4-f6mx",
"modified": "2022-05-24T17:40:49Z",
"published": "2022-05-24T17:40:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0356"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-acknowledgements"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
If at all possible, use library calls rather than external processes to recreate the desired functionality.
Mitigation
If possible, ensure that all external commands called from the program are statically created.
Mitigation MIT-5
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
Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.
Mitigation
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.