Common Weakness Enumeration
CWE-73
AllowedExternal Control of File Name or Path
Abstraction: Base · Status: Draft
The product allows user input to control or influence paths or file names that are used in filesystem operations.
1268 vulnerabilities reference this CWE, most recent first.
CVE-2020-9752 (GCVE-0-2020-9752)
Vulnerability from cvelistv5 – Published: 2020-03-23 02:15 – Updated: 2024-08-04 10:43
VLAI
EPSS
VEX
Summary
Naver Cloud Explorer before 2.2.2.11 allows the attacker can move a local file in any path on the filesystem as a system privilege through its named pipe.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cve.naver.com/detail/cve-2020-9752 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NAVER Corporation | Naver Cloud Explorer |
Affected:
unspecified , ≤ 2.2.2.11
(custom)
|
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CVE-2020-8553 (GCVE-0-2020-8553)
Vulnerability from cvelistv5 – Published: 2020-07-29 14:53 – Updated: 2024-08-04 10:03
VLAI
EPSS
VEX
Title
Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names
Summary
The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.
Severity
5.9 (Medium)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/kubernetes/ingress-nginx/issues/5126 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | ingress-nginx |
Affected:
unspecified , < 0.28.0
(custom)
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CVE-2020-6105 (GCVE-0-2020-6105)
Vulnerability from cvelistv5 – Published: 2020-10-15 14:48 – Updated: 2024-08-04 08:47
VLAI
EPSS
VEX
Summary
An exploitable code execution vulnerability exists in the multiple devices functionality of F2fs-Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause Information overwrite resulting in a code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.2 (High)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
| https://security.gentoo.org/glsa/202101-26 | vendor-advisoryx_refsource_GENTOO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | F2fs-Tools |
Affected:
F2fs-Tools F2fs.Fsck 1.13
|
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CVE-2020-5297 (GCVE-0-2020-5297)
Vulnerability from cvelistv5 – Published: 2020-06-03 21:55 – Updated: 2024-08-04 08:22
VLAI
EPSS
VEX
Title
Upload whitelisted files to any directory in OctoberCMS
Summary
In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, an attacker can exploit this vulnerability to upload jpg, jpeg, bmp, png, webp, gif, ico, css, js, woff, woff2, svg, ttf, eot, json, md, less, sass, scss, xml files to any directory of an October CMS server. The vulnerability is only exploitable by an authenticated backend user with the `cms.manage_assets` permission. Issue has been patched in Build 466 (v1.0.466).
Severity
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/octobercms/october/security/ad… | x_refsource_CONFIRM |
| https://github.com/octobercms/october/commit/6711… | x_refsource_MISC |
| http://packetstormsecurity.com/files/158730/Octob… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2020/Aug/2 | mailing-listx_refsource_FULLDISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| octobercms | october |
Affected:
>= 1.0.319, < 1.0.466
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CVE-2020-5296 (GCVE-0-2020-5296)
Vulnerability from cvelistv5 – Published: 2020-06-03 21:55 – Updated: 2024-08-04 08:22
VLAI
EPSS
VEX
Title
Arbitrary File Deletion vulnerability in OctoberCMS
Summary
In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, an attacker can exploit this vulnerability to delete arbitrary local files of an October CMS server. The vulnerability is only exploitable by an authenticated backend user with the `cms.manage_assets` permission. Issue has been patched in Build 466 (v1.0.466).
Severity
6.2 (Medium)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/octobercms/october/commit/2b89… | x_refsource_MISC |
| https://github.com/octobercms/october/security/ad… | x_refsource_CONFIRM |
| http://packetstormsecurity.com/files/158730/Octob… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2020/Aug/2 | mailing-listx_refsource_FULLDISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| octobercms | october |
Affected:
>= 1.0.319, < 1.0.466
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CVE-2020-2504 (GCVE-0-2020-2504)
Vulnerability from cvelistv5 – Published: 2020-12-24 01:39 – Updated: 2024-09-17 00:25
VLAI
EPSS
VEX
Title
Absolute path traversal vulnerability in QES
Summary
If exploited, this absolute path traversal vulnerability could allow attackers to traverse files in File Station. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
Severity
5.8 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.qnap.com/zh-tw/security-advisory/qsa-20-17 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QNAP Systems Inc. | QES |
Affected:
unspecified , < 2.1.1
(custom)
|
Date Public
2020-12-23 00:00
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CVE-2020-2009 (GCVE-0-2020-2009)
Vulnerability from cvelistv5 – Published: 2020-05-13 19:07 – Updated: 2024-09-16 18:07
VLAI
EPSS
VEX
Title
PAN-OS: Panorama SD WAN arbitrary file creation
Summary
An external control of filename vulnerability in the SD WAN component of Palo Alto Networks PAN-OS Panorama allows an authenticated administrator to send a request that results in the creation and write of an arbitrary file on all firewalls managed by the Panorama. In some cases this results in arbitrary code execution with root permissions. This issue affects: All versions of PAN-OS 7.1; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.7.
Severity
7.2 (High)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2020-2009 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | PAN-OS |
Affected:
7.1.*
Affected: 8.0.* Affected: 8.1 , < 8.1.14 (custom) Affected: 9.0 , < 9.0.7 (custom) |
Date Public
2020-05-13 00:00
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CVE-2020-2008 (GCVE-0-2020-2008)
Vulnerability from cvelistv5 – Published: 2020-05-13 19:07 – Updated: 2024-09-16 17:08
VLAI
EPSS
VEX
Title
PAN-OS: OS command injection or arbitrary file deletion vulnerability
Summary
An OS command injection and external control of filename vulnerability in Palo Alto Networks PAN-OS allows authenticated administrators to execute code with root privileges or delete arbitrary system files and impact the system's integrity or cause a denial of service condition. This issue affects: All versions of PAN-OS 7.1 and 8.0; PAN-OS 8.1 versions earlier than 8.1.14.
Severity
7.2 (High)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2020-2008 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | PAN-OS |
Affected:
8.0.*
Affected: 7.1.* Affected: 8.1 , < 8.1.14 (custom) Unaffected: 9.0.0 , < 9.0* (custom) Unaffected: 9.1.0 , < 9.1* (custom) |
Date Public
2020-05-13 00:00
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CVE-2020-2003 (GCVE-0-2020-2003)
Vulnerability from cvelistv5 – Published: 2020-05-13 19:07 – Updated: 2024-09-16 23:05
VLAI
EPSS
VEX
Title
PAN-OS: Authenticated administrator can delete arbitrary system file
Summary
An external control of filename vulnerability in the command processing of PAN-OS allows an authenticated administrator to delete arbitrary system files affecting the integrity of the system or causing denial of service to all PAN-OS services. This issue affects: All versions of PAN-OS 7.1 and 8.0; PAN-OS 8.1 versions before 8.1.14; PAN-OS 9.0 versions before 9.0.7; PAN-OS 9.1 versions before 9.1.1.
Severity
6.5 (Medium)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2020-2003 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | PAN-OS |
Affected:
7.1.*
Affected: 8.0.* Affected: 8.1 , < 8.1.14 (custom) Affected: 9.0 , < 9.0.7 (custom) Affected: 9.1 , < 9.1.1 (custom) |
Date Public
2020-05-13 00:00
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CVE-2020-1984 (GCVE-0-2020-1984)
Vulnerability from cvelistv5 – Published: 2020-04-08 18:41 – Updated: 2024-09-17 04:20
VLAI
EPSS
VEX
Title
Secdo: Privilege escalation via hardcoded script path
Summary
Secdo tries to execute a script at a hardcoded path if present, which allows a local authenticated user with 'create folders or append data' access to the root of the OS disk (C:\) to gain system privileges if the path does not already exist or is writable. This issue affects all versions of Secdo for Windows.
Severity
7.8 (High)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2020-1984 | x_refsource_MISC |
Date Public
2020-04-08 00:00
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Mitigation
Architecture and Design
When the set of filenames is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames, and reject all other inputs. For example, ID 1 could map to "inbox.txt" and ID 2 could map to "profile.txt". Features such as the ESAPI AccessReferenceMap provide this capability.
Mitigation
Architecture and Design
Operation
- Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict all access to files within a particular directory.
- Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-5.1
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- When validating filenames, use stringent allowlists that limit the character set to be used. If feasible, only allow a single "." character in the filename to avoid weaknesses such as CWE-23, and exclude directory separators such as "/" to avoid CWE-36. Use a list of allowable file extensions, which will help to avoid CWE-434.
- Do not rely exclusively on a filtering mechanism that removes potentially dangerous characters. This is equivalent to a denylist, which may be incomplete (CWE-184). For example, filtering "/" is insufficient protection if the filesystem also supports the use of "\" as a directory separator. Another possible error could occur when the filtering is applied in a way that still produces dangerous data (CWE-182). For example, if "../" sequences are removed from the ".../...//" string in a sequential fashion, two instances of "../" would be removed from the original string, but the remaining characters would still form the "../" string.
Mitigation
Implementation
Use a built-in path canonicalization function (such as realpath() in C) that produces the canonical version of the pathname, which effectively removes ".." sequences and symbolic links (CWE-23, CWE-59).
Mitigation
Installation
Operation
Use OS-level permissions and run as a low-privileged user to limit the scope of any successful attack.
Mitigation
Operation
Implementation
If you are using PHP, configure your application so that it does not use register_globals. During implementation, develop your application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.
Mitigation
Testing
Use tools and techniques that require manual (human) analysis, such as penetration testing, threat modeling, and interactive tools that allow the tester to record and modify an active session. These may be more effective than strictly automated techniques. This is especially the case with weaknesses that are related to design and business rules.
CAPEC-13: Subverting Environment Variable Values
The adversary directly or indirectly modifies environment variables used by or controlling the target software. The adversary's goal is to cause the target software to deviate from its expected operation in a manner that benefits the adversary.
CAPEC-267: Leverage Alternate Encoding
An adversary leverages the possibility to encode potentially harmful input or content used by applications such that the applications are ineffective at validating this encoding standard.
CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic
This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple ways of encoding a URL and abuse the interpretation of the URL. A URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
CAPEC-72: URL Encoding
This attack targets the encoding of the URL. An adversary can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL.
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.
CAPEC-78: Using Escaped Slashes in Alternate Encoding
This attack targets the use of the backslash in alternate encoding. An adversary can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the adversary tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.
CAPEC-79: Using Slashes in Alternate Encoding
This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic
This attack is a specific variation on leveraging alternate encodings to bypass validation logic. This attack leverages the possibility to encode potentially harmful input in UTF-8 and submit it to applications not expecting or effective at validating this encoding standard making input filtering difficult. UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. Legal UTF-8 characters are one to four bytes long. However, early version of the UTF-8 specification got some entries wrong (in some cases it permitted overlong characters). UTF-8 encoders are supposed to use the "shortest possible" encoding, but naive decoders may accept encodings that are longer than necessary. According to the RFC 3629, a particularly subtle form of this attack can be carried out against a parser which performs security-critical validity checks against the UTF-8 encoded form of its input, but interprets certain illegal octet sequences as characters.