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.
5389 vulnerabilities reference this CWE, most recent first.
GHSA-JMPF-9FGV-P5CR
Vulnerability from github – Published: 2024-02-22 15:30 – Updated: 2024-08-22 21:31Netis WF2780 v2.1.40144 was discovered to contain a command injection vulnerability via the wps_ap_ssid5g parameter
{
"affected": [],
"aliases": [
"CVE-2024-25850"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-22T15:15:08Z",
"severity": "CRITICAL"
},
"details": "Netis WF2780 v2.1.40144 was discovered to contain a command injection vulnerability via the wps_ap_ssid5g parameter",
"id": "GHSA-jmpf-9fgv-p5cr",
"modified": "2024-08-22T21:31:27Z",
"published": "2024-02-22T15:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25850"
},
{
"type": "WEB",
"url": "https://github.com/no1rr/Vulnerability/blob/master/netis/igd_wps_set_wps_ap_ssid5g.md"
},
{
"type": "WEB",
"url": "https://www.netis-systems.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JMQP-37M5-49WH
Vulnerability from github – Published: 2024-05-14 20:16 – Updated: 2024-05-14 20:16Impact
Any user authorized to connect to a ssh server using sshproxy can inject options to the ssh command executed by sshproxy.
All versions of sshproxy are impacted.
Patches
The problem is patched starting on version 1.6.3
Workarounds
The only workaround is to use the force_command option in sshproxy.yaml, but it's rarely relevant.
References
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.6.2"
},
"package": {
"ecosystem": "Go",
"name": "github.com/cea-hpc/sshproxy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-34713"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": true,
"github_reviewed_at": "2024-05-14T20:16:33Z",
"nvd_published_at": "2024-05-14T16:17:27Z",
"severity": "LOW"
},
"details": "### Impact\nAny user authorized to connect to a ssh server using `sshproxy` can inject options to the `ssh` command executed by `sshproxy`.\nAll versions of `sshproxy` are impacted.\n\n### Patches\nThe problem is patched starting on version 1.6.3\n\n### Workarounds\nThe only workaround is to use the `force_command` option in `sshproxy.yaml`, but it\u0027s rarely relevant.\n\n### References\n\n",
"id": "GHSA-jmqp-37m5-49wh",
"modified": "2024-05-14T20:16:33Z",
"published": "2024-05-14T20:16:33Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/cea-hpc/sshproxy/security/advisories/GHSA-jmqp-37m5-49wh"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34713"
},
{
"type": "WEB",
"url": "https://github.com/cea-hpc/sshproxy/commit/3b8bccc874dc4ca2c80c956cad65722abb46f0b9"
},
{
"type": "WEB",
"url": "https://github.com/cea-hpc/sshproxy/commit/f7eabd05d5f0f951e160293692327cad9a7d9580"
},
{
"type": "PACKAGE",
"url": "https://github.com/cea-hpc/sshproxy"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "sshproxy vulnerable to SSH option injection"
}
GHSA-JMX3-98VW-W6HQ
Vulnerability from github – Published: 2023-08-01 21:30 – Updated: 2024-04-04 06:28An authenticated command injection vulnerability exists in the AOS-CX command line interface. Successful exploitation of this vulnerability results in the ability to execute arbitrary commands on the underlying operating system as a privileged user on the affected switch. This allows an attacker to fully compromise the underlying operating system on the device running AOS-CX.
{
"affected": [],
"aliases": [
"CVE-2023-3718"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-01T19:15:09Z",
"severity": "HIGH"
},
"details": "\nAn authenticated command injection vulnerability exists in the AOS-CX command line interface. Successful exploitation of this vulnerability results in the ability to execute arbitrary commands on the underlying operating system as a privileged user on the affected switch. This allows an attacker to fully compromise the underlying operating system on the device running AOS-CX.\n\n\n\n",
"id": "GHSA-jmx3-98vw-w6hq",
"modified": "2024-04-04T06:28:52Z",
"published": "2023-08-01T21:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3718"
},
{
"type": "WEB",
"url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2023-010.txt"
}
],
"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-JP3Q-VH5X-QVF2
Vulnerability from github – Published: 2022-02-09 00:00 – Updated: 2022-03-17 00:05D-Link device D-Link DIR-823-Pro v1.0.2 was discovered to contain a command injection vulnerability in the function SetStationSettings. This vulnerability allows attackers to execute arbitrary commands via the station_access_enable parameter.
{
"affected": [],
"aliases": [
"CVE-2021-46455"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-04T02:15:00Z",
"severity": "CRITICAL"
},
"details": "D-Link device D-Link DIR-823-Pro v1.0.2 was discovered to contain a command injection vulnerability in the function SetStationSettings. This vulnerability allows attackers to execute arbitrary commands via the station_access_enable parameter.",
"id": "GHSA-jp3q-vh5x-qvf2",
"modified": "2022-03-17T00:05:56Z",
"published": "2022-02-09T00:00:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46455"
},
{
"type": "WEB",
"url": "https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_22/22.md"
},
{
"type": "WEB",
"url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10285"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en/security-bulletin"
}
],
"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-JP45-65JW-94MJ
Vulnerability from github – Published: 2022-08-03 00:00 – Updated: 2022-08-10 17:54A command injection vulnerability affects all versions of package heroku-env. The injection point is located in lib/get.js which is required by index.js.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "heroku-env"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.2.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-28437"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": true,
"github_reviewed_at": "2022-08-10T17:54:26Z",
"nvd_published_at": "2022-08-02T14:15:00Z",
"severity": "CRITICAL"
},
"details": "A command injection vulnerability affects all versions of package heroku-env. The injection point is located in lib/get.js which is required by index.js.",
"id": "GHSA-jp45-65jw-94mj",
"modified": "2022-08-10T17:54:26Z",
"published": "2022-08-03T00:00:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28437"
},
{
"type": "PACKAGE",
"url": "https://github.com/brianc/node-heroku-env"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JS-HEROKUENV-1050432"
}
],
"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"
}
],
"summary": "heroku-env susceptible to command injection"
}
GHSA-JP9W-W77G-78H3
Vulnerability from github – Published: 2024-09-25 15:31 – Updated: 2024-09-25 15:31In Progress Telerik UI for WPF versions prior to 2024 Q3 (2024.3.924), a command injection attack is possible through improper neutralization of hyperlink elements.
{
"affected": [],
"aliases": [
"CVE-2024-7575"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-25T14:15:05Z",
"severity": "HIGH"
},
"details": "In Progress Telerik UI for WPF versions prior to 2024 Q3 (2024.3.924), a command injection attack is possible through improper neutralization of hyperlink elements.",
"id": "GHSA-jp9w-w77g-78h3",
"modified": "2024-09-25T15:31:12Z",
"published": "2024-09-25T15:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7575"
},
{
"type": "WEB",
"url": "https://docs.telerik.com/devtools/wpf/knowledge-base/command-injection-cve-2024-7575"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JPC2-3RCQ-MCHP
Vulnerability from github – Published: 2024-09-23 09:30 – Updated: 2024-09-23 09:30Xiaomi Router AX9000 has a post-authorization command injection vulnerability. This vulnerability is caused by the lack of validation of user input, and an attacker can exploit this vulnerability to execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2024-45348"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-23T09:15:02Z",
"severity": "MODERATE"
},
"details": "Xiaomi Router AX9000 has a post-authorization command injection vulnerability. This vulnerability is caused by the lack of validation of user input, and an attacker can exploit this vulnerability to execute arbitrary code.",
"id": "GHSA-jpc2-3rcq-mchp",
"modified": "2024-09-23T09:30:46Z",
"published": "2024-09-23T09:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45348"
},
{
"type": "WEB",
"url": "https://trust.mi.com/zh-CN/misrc/bulletins/advisory?cveId=547"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JPJG-WW2X-6WW6
Vulnerability from github – Published: 2022-03-26 00:00 – Updated: 2022-03-31 00:00Improper neutralization of special elements used in a command ('Command Injection') vulnerability in File service functionality in Synology DiskStation Manager (DSM) before 6.2.4-25556-2 allows remote authenticated users to execute arbitrary commands via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2022-22688"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-25T07:15:00Z",
"severity": "HIGH"
},
"details": "Improper neutralization of special elements used in a command (\u0027Command Injection\u0027) vulnerability in File service functionality in Synology DiskStation Manager (DSM) before 6.2.4-25556-2 allows remote authenticated users to execute arbitrary commands via unspecified vectors.",
"id": "GHSA-jpjg-ww2x-6ww6",
"modified": "2022-03-31T00:00:34Z",
"published": "2022-03-26T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-22688"
},
{
"type": "WEB",
"url": "https://www.synology.com/security/advisory/Synology_SA_21_22"
}
],
"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-JPP8-232V-26FC
Vulnerability from github – Published: 2021-11-25 00:00 – Updated: 2022-06-29 00:00PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2).
{
"affected": [],
"aliases": [
"CVE-2021-28707"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-24T01:15:00Z",
"severity": "HIGH"
},
"details": "PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2).",
"id": "GHSA-jpp8-232v-26fc",
"modified": "2022-06-29T00:00:49Z",
"published": "2021-11-25T00:00:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28707"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202402-07"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-5017"
},
{
"type": "WEB",
"url": "https://xenbits.xenproject.org/xsa/advisory-388.txt"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JPPP-PMHM-3CP9
Vulnerability from github – Published: 2026-02-27 06:31 – Updated: 2026-02-27 06:31A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument webWlanIdx results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
{
"affected": [],
"aliases": [
"CVE-2026-3301"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-27T06:18:00Z",
"severity": "HIGH"
},
"details": "A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument webWlanIdx results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.",
"id": "GHSA-jppp-pmhm-3cp9",
"modified": "2026-02-27T06:31:28Z",
"published": "2026-02-27T06:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3301"
},
{
"type": "WEB",
"url": "https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.348052"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.348052"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.761297"
},
{
"type": "WEB",
"url": "https://www.totolink.net"
}
],
"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/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
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.