CWE-61
UNIX Symbolic Link (Symlink) Following
The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
CVE-2021-32551 (GCVE-0-2021-32551)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-16 20:21
VLAI
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-15 package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
Affected: 2.20.9 , < 2.20.9-0ubuntu7.24 (custom) Affected: 2.20.11-0ubuntu27 , < 2.20.11-0ubuntu27.18 (custom) Affected: 2.20.11-0ubuntu50 , < 2.20.11-0ubuntu50.7 (custom) Affected: 2.20.11-0ubuntu65 , < 2.20.11-0ubuntu65.1 (custom) Affected: 2.14.1-0ubuntu3 , < 2.14.1-0ubuntu3.29+esm7 (custom) |
Date Public
2021-05-25 00:00
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CVE-2021-32552 (GCVE-0-2021-32552)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-17 02:37
VLAI
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-16 package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
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Date Public
2021-05-25 00:00
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CVE-2021-32553 (GCVE-0-2021-32553)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-16 22:51
VLAI
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-17 package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
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Date Public
2021-05-25 00:00
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CVE-2021-32554 (GCVE-0-2021-32554)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-16 23:20
VLAI
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
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Date Public
2021-05-25 00:00
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CVE-2021-32555 (GCVE-0-2021-32555)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-16 20:47
VLAI
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg-hwe-18.04 package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
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Date Public
2021-05-25 00:00
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CVE-2021-32557 (GCVE-0-2021-32557)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-16 17:53
VLAI
Title
apport process_report() arbitrary file write
Summary
It was discovered that the process_report() function in data/whoopsie-upload-all allowed arbitrary file writes via symlinks.
Severity
5.2 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
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| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
Affected: 2.20.9 , < 2.20.9-0ubuntu7.24 (custom) Affected: 2.20.11-0ubuntu27 , < 2.20.11-0ubuntu27.18 (custom) Affected: 2.20.11-0ubuntu50 , < 2.20.11-0ubuntu50.7 (custom) Affected: 2.20.11-0ubuntu65 , < 2.20.11-0ubuntu65.1 (custom) Affected: 2.14.1-0ubuntu3 , < 2.14.1-0ubuntu3.29+esm7 (custom) |
Date Public
2021-05-25 00:00
Credits
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CVE-2021-39134 (GCVE-0-2021-39134)
Vulnerability from cvelistv5 – Published: 2021-08-31 16:55 – Updated: 2024-08-04 01:58
VLAI
Title
UNIX Symbolic Link (Symlink) Following in @npmcli/arborist
Summary
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Severity
8.2 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
4 references
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|---|---|
| https://github.com/npm/arborist/security/advisori… | x_refsource_CONFIRM |
| https://www.npmjs.com/package/%40npmcli/arborist | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
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CVE-2021-39135 (GCVE-0-2021-39135)
Vulnerability from cvelistv5 – Published: 2021-08-31 17:10 – Updated: 2024-08-04 01:58
VLAI
Title
UNIX Symbolic Link (Symlink) Following in @npmcli/arborist
Summary
`@npmcli/arborist`, the library that calculates dependency trees and manages the node_modules folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder. This is accomplished by extracting package contents into a project's `node_modules` folder. If the `node_modules` folder of the root project or any of its dependencies is somehow replaced with a symbolic link, it could allow Arborist to write package dependencies to any arbitrary location on the file system. Note that symbolic links contained within package artifact contents are filtered out, so another means of creating a `node_modules` symbolic link would have to be employed. 1. A `preinstall` script could replace `node_modules` with a symlink. (This is prevented by using `--ignore-scripts`.) 2. An attacker could supply the target with a git repository, instructing them to run `npm install --ignore-scripts` in the root. This may be successful, because `npm install --ignore-scripts` is typically not capable of making changes outside of the project directory, so it may be deemed safe. This is patched in @npmcli/arborist 2.8.2 which is included in npm v7.20.7 and above. For more information including workarounds please see the referenced GHSA-gmw6-94gg-2rc2.
Severity
8.2 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.npmjs.com/package/%40npmcli/arborist | x_refsource_MISC |
| https://github.com/npm/arborist/security/advisori… | x_refsource_CONFIRM |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2021-4287 (GCVE-0-2021-4287)
Vulnerability from cvelistv5 – Published: 2022-12-27 10:32 – Updated: 2025-04-11 14:42
VLAI
Title
ReFirm Labs binwalk Archive Extraction extractor.py symlink
Summary
A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.
Severity
5 (Medium)
5 (Medium)
CWE
- CWE-61 - Symlink Following
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.216876 | vdb-entry |
| https://vuldb.com/?ctiid.216876 | signaturepermissions-required |
| https://github.com/ReFirmLabs/binwalk/pull/556 | issue-tracking |
| https://github.com/ReFirmLabs/binwalk/commit/fa0c… | patch |
| https://github.com/ReFirmLabs/binwalk/releases/ta… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ReFirm Labs | binwalk |
Affected:
2.3.0
Affected: 2.3.1 Affected: 2.3.2 |
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CVE-2022-24904 (GCVE-0-2022-24904)
Vulnerability from cvelistv5 – Published: 2022-05-20 13:55 – Updated: 2025-04-23 18:25
VLAI
Title
Symlink following allows leaking out-of-bound manifests and JSON files from Argo CD repo-server
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Argo CD starting with version 0.7.0 and prior to versions 2.1.15m 2.2.9, and 2.3.4 is vulnerable to a symlink following bug allowing a malicious user with repository write access to leak sensitive files from Argo CD's repo-server. A malicious Argo CD user with write access for a repository which is (or may be) used in a directory-type Application may commit a symlink which points to an out-of-bounds file. Sensitive files which could be leaked include manifest files from other Applications' source repositories (potentially decrypted files, if you are using a decryption plugin) or any JSON-formatted secrets which have been mounted as files on the repo-server. A patch for this vulnerability has been released in Argo CD versions 2.3.4, 2.2.9, and 2.1.15. Users of versions 2.3.0 or above who do not have any Jsonnet/directory-type Applications may disable the Jsonnet/directory config management tool as a workaround.
Severity
4.3 (Medium)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/argoproj/argo-cd/security/advi… | x_refsource_CONFIRM |
| https://github.com/argoproj/argo-cd/releases/tag/… | x_refsource_MISC |
| https://github.com/argoproj/argo-cd/releases/tag/v2.2.9 | x_refsource_MISC |
| https://github.com/argoproj/argo-cd/releases/tag/v2.3.4 | x_refsource_MISC |
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},
"source": {
"advisory": "GHSA-6gcg-hp2x-q54h",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2022-24904",
"datePublished": "2022-05-20T13:55:11.000Z",
"dateReserved": "2022-02-10T00:00:00.000Z",
"dateUpdated": "2025-04-23T18:25:13.878Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation
Phase: Implementation
Description:
- Symbolic link attacks often occur when a program creates a tmp directory that stores files/links. Access to the directory should be restricted to the program as to prevent attackers from manipulating the files.
Mitigation ID: MIT-48.1
Phase: Architecture and Design
Strategy: Separation of Privilege
Description:
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.