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.
5381 vulnerabilities reference this CWE, most recent first.
GHSA-996H-76RQ-FFWQ
Vulnerability from github – Published: 2023-09-15 00:30 – Updated: 2024-04-04 07:41D-LINK DIR-859 A1 1.05 and A1 1.06B01 Beta01 was discovered to contain a command injection vulnerability via the lxmldbc_system function at /htdocs/cgibin.
{
"affected": [],
"aliases": [
"CVE-2023-39638"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-14T22:15:08Z",
"severity": "CRITICAL"
},
"details": "D-LINK DIR-859 A1 1.05 and A1 1.06B01 Beta01 was discovered to contain a command injection vulnerability via the lxmldbc_system function at /htdocs/cgibin.",
"id": "GHSA-996h-76rq-ffwq",
"modified": "2024-04-04T07:41:31Z",
"published": "2023-09-15T00:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39638"
},
{
"type": "WEB",
"url": "https://github.com/mmmmmx1/dlink/blob/main/dir-859/readme.md"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en/security-bulletin"
},
{
"type": "WEB",
"url": "http://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DIR-859"
}
],
"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-998V-M47J-CQM8
Vulnerability from github – Published: 2025-03-17 18:31 – Updated: 2025-03-17 18:31Dell SmartFabric OS10 Software, version(s) 10.5.4.x, 10.5.5.x, 10.5.6.x, 10.6.0.x, contain(s) an Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Code execution.
{
"affected": [],
"aliases": [
"CVE-2024-48017"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-17T18:15:19Z",
"severity": "MODERATE"
},
"details": "Dell SmartFabric OS10 Software, version(s) 10.5.4.x, 10.5.5.x, 10.5.6.x, 10.6.0.x, contain(s) an Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027) vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Code execution.",
"id": "GHSA-998v-m47j-cqm8",
"modified": "2025-03-17T18:31:53Z",
"published": "2025-03-17T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-48017"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000289970/dsa-2025-070-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000293638/dsa-2025-069-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000294091/dsa-2025-079-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000295014/dsa-2025-068-security-update-for-dell-networking-os10-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-998W-JCR6-GWPQ
Vulnerability from github – Published: 2026-01-17 21:30 – Updated: 2026-01-17 21:30A vulnerability was detected in kalcaddle kodbox up to 1.61.10. This issue affects some unknown processing of the file /?explorer/index/zip of the component Compression Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2026-1066"
],
"database_specific": {
"cwe_ids": [
"CWE-74",
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-17T21:15:49Z",
"severity": "MODERATE"
},
"details": "A vulnerability was detected in kalcaddle kodbox up to 1.61.10. This issue affects some unknown processing of the file /?explorer/index/zip of the component Compression Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-998w-jcr6-gwpq",
"modified": "2026-01-17T21:30:28Z",
"published": "2026-01-17T21:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1066"
},
{
"type": "WEB",
"url": "https://github.com/DReazer/CV3/blob/main/Krce.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.341665"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.341665"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.731436"
}
],
"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-99FP-FMRP-PWJ6
Vulnerability from github – Published: 2022-08-11 00:00 – Updated: 2022-08-13 00:00A vulnerability has been identified in Teamcenter V12.4 (All versions < V12.4.0.15), Teamcenter V13.0 (All versions < V13.0.0.10), Teamcenter V13.1 (All versions < V13.1.0.10), Teamcenter V13.2 (All versions < V13.2.0.9), Teamcenter V13.3 (All versions < V13.3.0.5), Teamcenter V14.0 (All versions < V14.0.0.2). File Server Cache service in Teamcenter consist of a functionality that is vulnerable to command injection. This could potentially allow an attacker to perform remote code execution.
{
"affected": [],
"aliases": [
"CVE-2022-34660"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-10T12:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in Teamcenter V12.4 (All versions \u003c V12.4.0.15), Teamcenter V13.0 (All versions \u003c V13.0.0.10), Teamcenter V13.1 (All versions \u003c V13.1.0.10), Teamcenter V13.2 (All versions \u003c V13.2.0.9), Teamcenter V13.3 (All versions \u003c V13.3.0.5), Teamcenter V14.0 (All versions \u003c V14.0.0.2). File Server Cache service in Teamcenter consist of a functionality that is vulnerable to command injection. This could potentially allow an attacker to perform remote code execution.",
"id": "GHSA-99fp-fmrp-pwj6",
"modified": "2022-08-13T00:00:35Z",
"published": "2022-08-11T00:00:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34660"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-759952.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-99VM-2JMG-Q6CJ
Vulnerability from github – Published: 2025-05-09 18:30 – Updated: 2025-05-10 03:30Jan v0.5.14 and before is vulnerable to remote code execution (RCE) when the user clicks on a rendered link in the conversation, due to opening external website in the app and the exposure of electronAPI, with a lack of filtering of URL when calling shell.openExternal().
{
"affected": [],
"aliases": [
"CVE-2025-29509"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-94"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-09T17:15:50Z",
"severity": "CRITICAL"
},
"details": "Jan v0.5.14 and before is vulnerable to remote code execution (RCE) when the user clicks on a rendered link in the conversation, due to opening external website in the app and the exposure of electronAPI, with a lack of filtering of URL when calling shell.openExternal().",
"id": "GHSA-99vm-2jmg-q6cj",
"modified": "2025-05-10T03:30:22Z",
"published": "2025-05-09T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29509"
},
{
"type": "WEB",
"url": "https://drive.google.com/file/d/1qDztNtn2merSjYgPRLWFFXqlXM9tcrjD/view?usp=sharing"
},
{
"type": "WEB",
"url": "https://gist.github.com/Suuuuuzy/b8fa2fa083793c460e3686c182f8c4d1"
}
],
"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-99WP-PQM6-2VH4
Vulnerability from github – Published: 2022-04-29 00:00 – Updated: 2022-05-07 00:00Sed Injection Vulnerability in GitHub repository hestiacp/hestiacp prior to 1.5.12. An authenticated remote attacker with low privileges can execute arbitrary code under root context.
{
"affected": [],
"aliases": [
"CVE-2022-1509"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-74",
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-28T10:15:00Z",
"severity": "HIGH"
},
"details": "Sed Injection Vulnerability in GitHub repository hestiacp/hestiacp prior to 1.5.12. An authenticated remote attacker with low privileges can execute arbitrary code under root context.",
"id": "GHSA-99wp-pqm6-2vh4",
"modified": "2022-05-07T00:00:54Z",
"published": "2022-04-29T00:00:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1509"
},
{
"type": "WEB",
"url": "https://github.com/hestiacp/hestiacp/commit/d50f95cf208049dfb6ac67a8020802121745bd60"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/09e69dff-f281-4e51-8312-ed7ab7606338"
}
],
"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-9C4G-FP4R-PRRV
Vulnerability from github – Published: 2025-09-30 12:30 – Updated: 2025-10-03 18:22All versions of the package check-branches are vulnerable to Command Injection.
check-branches is a command-line tool that is interacted with locally, or via CI, to confirm no conflicts exist in git branches.
However, the library follows these conventions which can be abused: 1. It trusts branch names as they are (plain text) 2. It spawns git commands by concatenating user input
Since a branch name is potentially a user input - as users can create branches remotely via pull requests, or simply due to privileged access to a repository - it can effectively be abused to run any command.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "check-branches"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.0.19"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-11148"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": true,
"github_reviewed_at": "2025-09-30T21:08:04Z",
"nvd_published_at": "2025-09-30T11:37:38Z",
"severity": "CRITICAL"
},
"details": "All versions of the package check-branches are vulnerable to Command Injection.\n\ncheck-branches is a command-line tool that is interacted with locally, or via CI, to confirm no conflicts exist in git branches.\n\nHowever, the library follows these conventions which can be abused:\n1. It trusts branch names as they are (plain text)\n2. It spawns git commands by concatenating user input\n\nSince a branch name is potentially a user input - as users can create branches remotely via pull requests, or simply due to privileged access to a repository - it can effectively be abused to run any command.",
"id": "GHSA-9c4g-fp4r-prrv",
"modified": "2025-10-03T18:22:21Z",
"published": "2025-09-30T12:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11148"
},
{
"type": "WEB",
"url": "https://gist.github.com/lirantal/054b4ad039a86c418f2c84e3e884d6ec"
},
{
"type": "PACKAGE",
"url": "https://github.com/puntorigen/check-branches"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JS-CHECKBRANCHES-2766494"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "check-branches is vulnerable to command Injection"
}
GHSA-9CGP-2W4G-2M78
Vulnerability from github – Published: 2022-04-21 01:54 – Updated: 2024-04-03 23:04On Linksys WAG54G2 1.00.10 devices, there is authenticated command injection via shell metacharacters in the setup.cgi c4_ping_ipaddr variable.
{
"affected": [],
"aliases": [
"CVE-2009-5157"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-11T21:29:00Z",
"severity": "HIGH"
},
"details": "On Linksys WAG54G2 1.00.10 devices, there is authenticated command injection via shell metacharacters in the setup.cgi c4_ping_ipaddr variable.",
"id": "GHSA-9cgp-2w4g-2m78",
"modified": "2024-04-03T23:04:15Z",
"published": "2022-04-21T01:54:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-5157"
},
{
"type": "WEB",
"url": "https://www.securityfocus.com/archive/1/503934"
},
{
"type": "WEB",
"url": "https://www.securityfocus.com/bid/35142"
}
],
"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-9CGV-PX49-JXX3
Vulnerability from github – Published: 2026-02-08 03:30 – Updated: 2026-02-08 03:30A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.
{
"affected": [],
"aliases": [
"CVE-2026-2129"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-08T02:15:56Z",
"severity": "HIGH"
},
"details": "A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.",
"id": "GHSA-9cgv-px49-jxx3",
"modified": "2026-02-08T03:30:26Z",
"published": "2026-02-08T03:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2129"
},
{
"type": "WEB",
"url": "https://github.com/master-abc/cve/issues/23"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.344764"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.344764"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.746935"
},
{
"type": "WEB",
"url": "https://www.dlink.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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-9CH7-PH54-C5V4
Vulnerability from github – Published: 2024-07-09 12:30 – Updated: 2024-07-09 12:30A vulnerability has been identified in SINEMA Remote Connect Client (All versions < V3.2 HF1). The system service of affected applications is vulnerable to command injection due to missing server side input sanitation when loading proxy configurations. This could allow an authenticated local attacker to execute arbitrary code with system privileges.
{
"affected": [],
"aliases": [
"CVE-2024-39568"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T12:15:16Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in SINEMA Remote Connect Client (All versions \u003c V3.2 HF1). The system service of affected applications is vulnerable to command injection due to missing server side input sanitation when loading proxy configurations. This could allow an authenticated local attacker to execute arbitrary code with system privileges.",
"id": "GHSA-9ch7-ph54-c5v4",
"modified": "2024-07-09T12:30:57Z",
"published": "2024-07-09T12:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39568"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-868282.html"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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.