CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
1984 vulnerabilities reference this CWE, most recent first.
GHSA-WPW2-359H-43FC
Vulnerability from github – Published: 2022-05-17 05:53 – Updated: 2022-05-17 05:53tkusr in tkusr 0.82 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/tkusr.pgm temporary file.
{
"affected": [],
"aliases": [
"CVE-2008-5136"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-11-18T16:00:00Z",
"severity": "MODERATE"
},
"details": "tkusr in tkusr 0.82 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/tkusr.pgm temporary file.",
"id": "GHSA-wpw2-359h-43fc",
"modified": "2022-05-17T05:53:11Z",
"published": "2022-05-17T05:53:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-5136"
},
{
"type": "WEB",
"url": "http://lists.debian.org/debian-devel/2008/08/msg00285.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/32406"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WQ7M-77GQ-FF44
Vulnerability from github – Published: 2022-05-17 05:06 – Updated: 2022-05-17 05:06bin/rt in Request Tracker (RT) 3.8.x before 3.8.17 and 4.0.x before 4.0.13 allows local users to overwrite arbitrary files via a symlink attack on a temporary file with predictable name.
{
"affected": [],
"aliases": [
"CVE-2013-3368"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2013-08-23T16:55:00Z",
"severity": "LOW"
},
"details": "bin/rt in Request Tracker (RT) 3.8.x before 3.8.17 and 4.0.x before 4.0.13 allows local users to overwrite arbitrary files via a symlink attack on a temporary file with predictable name.",
"id": "GHSA-wq7m-77gq-ff44",
"modified": "2022-05-17T05:06:04Z",
"published": "2022-05-17T05:06:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-3368"
},
{
"type": "WEB",
"url": "http://lists.bestpractical.com/pipermail/rt-announce/2013-May/000226.html"
},
{
"type": "WEB",
"url": "http://lists.bestpractical.com/pipermail/rt-announce/2013-May/000227.html"
},
{
"type": "WEB",
"url": "http://lists.bestpractical.com/pipermail/rt-announce/2013-May/000228.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/53505"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/53522"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2012/dsa-2670"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/93612"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WQQ2-J7VF-7RW9
Vulnerability from github – Published: 2022-05-13 01:21 – Updated: 2025-10-22 00:31An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.
{
"affected": [],
"aliases": [
"CVE-2019-0841"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-09T21:29:00Z",
"severity": "HIGH"
},
"details": "An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka \u0027Windows Elevation of Privilege Vulnerability\u0027. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.",
"id": "GHSA-wqq2-j7vf-7rw9",
"modified": "2025-10-22T00:31:38Z",
"published": "2022-05-13T01:21:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0841"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0841"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/46683"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-19-360"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WQWC-X3RC-2XW6
Vulnerability from github – Published: 2026-05-12 21:31 – Updated: 2026-05-19 15:39HashiCorp Nomad’s exec2 task driver prior to 0.1.2 is vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-8052) is fixed in version 0.1.2 of the exec2 task driver.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/hashicorp/nomad-driver-exec2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.1.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-8052"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-19T15:39:35Z",
"nvd_published_at": "2026-05-12T20:16:46Z",
"severity": "MODERATE"
},
"details": "HashiCorp Nomad\u2019s exec2 task driver prior to 0.1.2 is vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-8052) is fixed in version 0.1.2 of the exec2 task driver.",
"id": "GHSA-wqwc-x3rc-2xw6",
"modified": "2026-05-19T15:39:35Z",
"published": "2026-05-12T21:31:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8052"
},
{
"type": "WEB",
"url": "https://discuss.hashicorp.com/t/hcsec-2026-13-nomads-exec2-task-driver-vulnerable-to-arbitrary-file-read-write-on-client-host-through-symlink-attack/77415"
},
{
"type": "PACKAGE",
"url": "https://github.com/hashicorp/nomad-driver-exec2"
},
{
"type": "WEB",
"url": "https://github.com/hashicorp/nomad-driver-exec2/releases/tag/v0.1.2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "HashiCorp Nomad\u2019s exec2 task driver vulnerable to a symlink attack"
}
GHSA-WR7G-5V93-63R2
Vulnerability from github – Published: 2022-05-17 02:18 – Updated: 2022-05-17 02:18inmail-show in mh-book 200605 allows local users to overwrite arbitrary files via a symlink attack on a (1) /tmp/inmail#####.log or (2) /tmp/inmail#####.stdin temporary file.
{
"affected": [],
"aliases": [
"CVE-2008-5152"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-11-18T16:00:00Z",
"severity": "MODERATE"
},
"details": "inmail-show in mh-book 200605 allows local users to overwrite arbitrary files via a symlink attack on a (1) /tmp/inmail#####.log or (2) /tmp/inmail#####.stdin temporary file.",
"id": "GHSA-wr7g-5v93-63r2",
"modified": "2022-05-17T02:18:02Z",
"published": "2022-05-17T02:18:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-5152"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/46709"
},
{
"type": "WEB",
"url": "http://lists.debian.org/debian-devel/2008/08/msg00347.html"
},
{
"type": "WEB",
"url": "http://uvw.ru/report.sid.txt"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/32399"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WR8V-PMCM-77GW
Vulnerability from github – Published: 2022-05-24 19:05 – Updated: 2022-05-24 19:05It 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.
{
"affected": [],
"aliases": [
"CVE-2021-32551"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-12T04:15:00Z",
"severity": "MODERATE"
},
"details": "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.",
"id": "GHSA-wr8v-pmcm-77gw",
"modified": "2022-05-24T19:05:16Z",
"published": "2022-05-24T19:05:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32551"
},
{
"type": "WEB",
"url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1917904"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WVP4-7F3W-G9QJ
Vulnerability from github – Published: 2022-05-17 01:27 – Updated: 2022-05-17 01:27syncevo/installcheck-local.sh in syncevolution before 1.3.99.7 uses mktemp to create a safe temporary file but appends a suffix to the original filename and writes to this new filename, which allows local users to overwrite arbitrary files via a symlink attack on the new filename.
{
"affected": [],
"aliases": [
"CVE-2014-1639"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2014-01-28T00:55:00Z",
"severity": "LOW"
},
"details": "syncevo/installcheck-local.sh in syncevolution before 1.3.99.7 uses mktemp to create a safe temporary file but appends a suffix to the original filename and writes to this new filename, which allows local users to overwrite arbitrary files via a symlink attack on the new filename.",
"id": "GHSA-wvp4-7f3w-g9qj",
"modified": "2022-05-17T01:27:07Z",
"published": "2022-05-17T01:27:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-1639"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/90662"
},
{
"type": "WEB",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=736357"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2014/01/22/3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2014/01/22/4"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/102380"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/65098"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WW43-23JX-QCPC
Vulnerability from github – Published: 2022-12-22 21:30 – Updated: 2025-04-15 15:30When resolving a symlink such as file:///proc/self/fd/1, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer.
This bug only affects Thunderbird on Unix-based operated systems (Android, Linux, MacOS). Windows is unaffected.. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
{
"affected": [],
"aliases": [
"CVE-2022-45412"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-22T20:15:00Z",
"severity": "HIGH"
},
"details": "When resolving a symlink such as \u003ccode\u003efile:///proc/self/fd/1\u003c/code\u003e, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer. \u003cbr\u003e*This bug only affects Thunderbird on Unix-based operated systems (Android, Linux, MacOS). Windows is unaffected.*. This vulnerability affects Firefox ESR \u003c 102.5, Thunderbird \u003c 102.5, and Firefox \u003c 107.",
"id": "GHSA-ww43-23jx-qcpc",
"modified": "2025-04-15T15:30:36Z",
"published": "2022-12-22T21:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45412"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1791029"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-47"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-48"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-49"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WW6F-FX4X-QW8G
Vulnerability from github – Published: 2022-05-24 17:32 – Updated: 2022-05-24 17:32checkpath in OpenRC through 0.42.1 might allow local users to take ownership of arbitrary files because a non-terminal path component can be a symlink.
{
"affected": [],
"aliases": [
"CVE-2018-21269"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-10-27T04:15:00Z",
"severity": "MODERATE"
},
"details": "checkpath in OpenRC through 0.42.1 might allow local users to take ownership of arbitrary files because a non-terminal path component can be a symlink.",
"id": "GHSA-ww6f-fx4x-qw8g",
"modified": "2022-05-24T17:32:13Z",
"published": "2022-05-24T17:32:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-21269"
},
{
"type": "WEB",
"url": "https://github.com/OpenRC/openrc/issues/201"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WW8G-33X9-V3QW
Vulnerability from github – Published: 2022-05-24 16:54 – Updated: 2023-02-24 00:30IBM Informix Dynamic Server Enterprise Edition 12.1 could allow a local user logged in with database administrator user to gain root privileges through a symbolic link vulnerability in onmode. IBM X-Force ID: 144430.
{
"affected": [],
"aliases": [
"CVE-2018-1630"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-08-20T19:15:00Z",
"severity": "HIGH"
},
"details": "IBM Informix Dynamic Server Enterprise Edition 12.1 could allow a local user logged in with database administrator user to gain root privileges through a symbolic link vulnerability in onmode. IBM X-Force ID: 144430.",
"id": "GHSA-ww8g-33x9-v3qw",
"modified": "2023-02-24T00:30:16Z",
"published": "2022-05-24T16:54:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1630"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/144430"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20190903-0002"
},
{
"type": "WEB",
"url": "http://www.ibm.com/support/docview.wss?uid=ibm10964987"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-48.1
Strategy: Separation of Privilege
- 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-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
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.