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.
5382 vulnerabilities reference this CWE, most recent first.
GHSA-93WX-V3HX-P2QR
Vulnerability from github – Published: 2022-05-13 01:35 – Updated: 2022-05-13 01:35A vulnerability in the web-based management interface of Cisco Cloud Services Platform 2100 could allow an authenticated, remote attacker to perform command injection. The vulnerability is due to insufficient input validation of command input. An attacker could exploit this vulnerability by sending customized commands to the web-based management interface.
{
"affected": [],
"aliases": [
"CVE-2018-0454"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-10-05T14:29:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the web-based management interface of Cisco Cloud Services Platform 2100 could allow an authenticated, remote attacker to perform command injection. The vulnerability is due to insufficient input validation of command input. An attacker could exploit this vulnerability by sending customized commands to the web-based management interface.",
"id": "GHSA-93wx-v3hx-p2qr",
"modified": "2022-05-13T01:35:08Z",
"published": "2022-05-13T01:35:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0454"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-csp2100-injection"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041683"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-93X6-3878-H24M
Vulnerability from github – Published: 2022-05-24 17:39 – Updated: 2022-08-06 00:00Multiple vulnerabilities in the web UI of Cisco Smart Software Manager Satellite could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory.
{
"affected": [],
"aliases": [
"CVE-2021-1142"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-20T21:15:00Z",
"severity": "CRITICAL"
},
"details": "Multiple vulnerabilities in the web UI of Cisco Smart Software Manager Satellite could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory. ",
"id": "GHSA-93x6-3878-h24m",
"modified": "2022-08-06T00:00:38Z",
"published": "2022-05-24T17:39:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1142"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-multici-pgG5WM5A"
}
],
"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-9459-CP56-77P3
Vulnerability from github – Published: 2025-11-13 21:31 – Updated: 2025-11-14 18:31A command injection vulnerability exists in the D-Link DIR-823G router firmware DIR823G_V1.0.2B05_20181207.bin in the timelycheck and sysconf binaries, which process the /tmp/new_qos.rule configuration file. The vulnerability occurs because parsed fields from the configuration file are concatenated into command strings and executed via system() without any sanitization. An attacker with write access to /tmp/new_qos.rule can execute arbitrary commands on the device.
{
"affected": [],
"aliases": [
"CVE-2025-60675"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-13T19:15:48Z",
"severity": "MODERATE"
},
"details": "A command injection vulnerability exists in the D-Link DIR-823G router firmware DIR823G_V1.0.2B05_20181207.bin in the timelycheck and sysconf binaries, which process the /tmp/new_qos.rule configuration file. The vulnerability occurs because parsed fields from the configuration file are concatenated into command strings and executed via system() without any sanitization. An attacker with write access to /tmp/new_qos.rule can execute arbitrary commands on the device.",
"id": "GHSA-9459-cp56-77p3",
"modified": "2025-11-14T18:31:34Z",
"published": "2025-11-13T21:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60675"
},
{
"type": "WEB",
"url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-823G/CVE-2025-60675.md"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en/security-bulletin"
},
{
"type": "WEB",
"url": "http://d-link.com"
}
],
"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-94G3-J7XC-QPWJ
Vulnerability from github – Published: 2026-05-08 06:32 – Updated: 2026-05-08 18:31A Command Injection issue in the payload build page in BYOB (Build Your Own Botnet) 2.0 allows attackers to execute arbitrary commands on the server via a crafted build parameter. This occurs in freeze in core/generators.py.
{
"affected": [],
"aliases": [
"CVE-2024-45257"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-08T06:16:09Z",
"severity": "HIGH"
},
"details": "A Command Injection issue in the payload build page in BYOB (Build Your Own Botnet) 2.0 allows attackers to execute arbitrary commands on the server via a crafted build parameter. This occurs in freeze in core/generators.py.",
"id": "GHSA-94g3-j7xc-qpwj",
"modified": "2026-05-08T18:31:32Z",
"published": "2026-05-08T06:32:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45257"
},
{
"type": "WEB",
"url": "https://blog.chebuya.com/posts/unauthenticated-remote-command-execution-on-byob"
},
{
"type": "WEB",
"url": "https://github.com/malwaredllc/byob"
},
{
"type": "WEB",
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/byob_unauth_rce.rb"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-94GF-5WP7-WHQP
Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-05-26 13:30A security vulnerability has been detected in Totolink CA750-PoE 6.2c.510. Impacted is the function setNetworkDiag of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. The manipulation of the argument NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop is directly passed by the attacker/so we can control the NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
{
"affected": [],
"aliases": [
"CVE-2026-9514"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-25T23:16:34Z",
"severity": "LOW"
},
"details": "A security vulnerability has been detected in Totolink CA750-PoE 6.2c.510. Impacted is the function setNetworkDiag of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. The manipulation of the argument NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop is directly passed by the attacker/so we can control the NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.",
"id": "GHSA-94gf-5wp7-whqp",
"modified": "2026-05-26T13:30:52Z",
"published": "2026-05-26T13:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9514"
},
{
"type": "WEB",
"url": "https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_52/52.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/813926"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/365514"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/365514/cti"
},
{
"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"
}
]
}
GHSA-94VR-W69J-W5Q4
Vulnerability from github – Published: 2023-08-21 03:30 – Updated: 2024-04-04 07:04TOTOLINK X5000R B20210419 was discovered to contain a remote code execution (RCE) vulnerability via the setTracerouteCfg interface.
{
"affected": [],
"aliases": [
"CVE-2023-39618"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-21T02:15:09Z",
"severity": "CRITICAL"
},
"details": "TOTOLINK X5000R B20210419 was discovered to contain a remote code execution (RCE) vulnerability via the setTracerouteCfg interface.",
"id": "GHSA-94vr-w69j-w5q4",
"modified": "2024-04-04T07:04:22Z",
"published": "2023-08-21T03:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39618"
},
{
"type": "WEB",
"url": "https://sedate-class-393.notion.site/TOTOlink-3567fd9f93d84afab0d81cd8c063f9a1?pvs=4"
}
],
"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-952C-H44R-C6FV
Vulnerability from github – Published: 2022-05-05 00:00 – Updated: 2022-05-13 00:00A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the switchFastDhcp function in /cgi-bin/luci/api/diagnose.
{
"affected": [],
"aliases": [
"CVE-2021-43160"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-04T01:15:00Z",
"severity": "HIGH"
},
"details": "A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the switchFastDhcp function in /cgi-bin/luci/api/diagnose.",
"id": "GHSA-952c-h44r-c6fv",
"modified": "2022-05-13T00:00:37Z",
"published": "2022-05-05T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43160"
},
{
"type": "WEB",
"url": "https://seclists.org/fulldisclosure/2022/May/0"
},
{
"type": "WEB",
"url": "http://ruijie.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-9538-25RQ-J9G9
Vulnerability from github – Published: 2022-08-31 00:00 – Updated: 2022-09-09 00:01RPi-Jukebox-RFID v2.3.0 was discovered to contain a command injection vulnerability via the component /htdocs/utils/Files.php. This vulnerability is exploited via a crafted payload injected into the file name of an uploaded file.
{
"affected": [],
"aliases": [
"CVE-2022-36749"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-30T22:15:00Z",
"severity": "CRITICAL"
},
"details": "RPi-Jukebox-RFID v2.3.0 was discovered to contain a command injection vulnerability via the component /htdocs/utils/Files.php. This vulnerability is exploited via a crafted payload injected into the file name of an uploaded file.",
"id": "GHSA-9538-25rq-j9g9",
"modified": "2022-09-09T00:01:00Z",
"published": "2022-08-31T00:00:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36749"
},
{
"type": "WEB",
"url": "https://github.com/MiczFlor/RPi-Jukebox-RFID/issues/1859"
}
],
"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-955M-4443-8F7R
Vulnerability from github – Published: 2025-05-09 03:30 – Updated: 2025-05-09 03:30A vulnerability was found in D-Link DIR-619L 2.04B04. It has been classified as critical. This affects the function formSysCmd. The manipulation of the argument sysCmd leads to command injection. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure. This vulnerability only affects products that are no longer supported by the maintainer.
{
"affected": [],
"aliases": [
"CVE-2025-4453"
],
"database_specific": {
"cwe_ids": [
"CWE-74",
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-09T03:15:24Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in D-Link DIR-619L 2.04B04. It has been classified as critical. This affects the function formSysCmd. The manipulation of the argument sysCmd leads to command injection. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure. This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-955m-4443-8f7r",
"modified": "2025-05-09T03:30:25Z",
"published": "2025-05-09T03:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4453"
},
{
"type": "WEB",
"url": "https://github.com/jylsec/vuldb/blob/main/D-Link/dlink_dir619l/Command_injection-formSysCmd-sysCmd/README.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.308067"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.308067"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.560797"
},
{
"type": "WEB",
"url": "https://www.dlink.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-955W-RV3V-9M9P
Vulnerability from github – Published: 2025-06-02 12:30 – Updated: 2025-06-02 12:30A vulnerability has been found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001 and classified as critical. Affected by this vulnerability is the function RP_UpgradeFWByBBS of the file /goform/RP_UpgradeFWByBBS. The manipulation of the argument type/ch/ssidhex/security/extch/pwd/mode/ip/nm/gw leads to os command injection. The attack can be launched 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-2025-5444"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-02T12:15:26Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001 and classified as critical. Affected by this vulnerability is the function RP_UpgradeFWByBBS of the file /goform/RP_UpgradeFWByBBS. The manipulation of the argument type/ch/ssidhex/security/extch/pwd/mode/ip/nm/gw leads to os command injection. The attack can be launched 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-955w-rv3v-9m9p",
"modified": "2025-06-02T12:30:34Z",
"published": "2025-06-02T12:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5444"
},
{
"type": "WEB",
"url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_7/7.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.310783"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.310783"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.584366"
},
{
"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"
}
]
}
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.