CVE-2020-5237: Oneup/uploader bundle Path Traversal Vulnerability
HIGHCVE-2020-5237 is a HIGH (CVSS 8.8) path traversal vulnerability (CWE-23: Relative Path Traversal) affecting Oneup/uploader bundle libraries in the Packagist ecosystem. The issue involves relative path traversal (cwe-23) in chunked uploads in oneup/uploader-bundle. Remediation is available by upgrading affected packages to version 2.1.5, 1.9.3.
CVE-2020-5237 at a Glance
Security Impact
CVSS: 8.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2020-5237
To remediate this vulnerability, upgrade all affected Oneup/uploader bundle dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade oneup/uploader-bundle to 2.1.5Upgrade oneup/uploader-bundle to 1.9.3Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for oneup/uploader-bundleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-5237, inspect your project dependencies for Oneup/uploader bundle:
inspect dependencies for oneup/uploader-bundleAnalyze the terminal output to locate any version of Oneup/uploader bundle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.5), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-23: Relative Path Traversal, where the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. In Oneup/uploader bundle, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-5237 Affected Oneup/uploader bundle Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
oneup/uploader-bundle
|
Packagist |
≥ 2.0.0
< 2.1.5
|
2.1.5
|
|
oneup/uploader-bundle
|
Packagist |
≥ 1.0.0
< 1.9.3
|
1.9.3
|
References
Frequently Asked Questions
What is CVE-2020-5237?
Which Oneup/uploader bundle versions are affected?
What version fixes CVE-2020-5237?
Is oneup/uploader-bundle affected?
What is the CVSS score of CVE-2020-5237?
What CWE is associated with CVE-2020-5237?
How can I check Packagist dependencies for CVE-2020-5237?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-x8wj-6m73-gfqp",
"modified" : "2021-01-08T20:30:34Z",
"published" : "2020-02-18T18:59:24Z",
"aliases" : [ "CVE-2020-5237" ],
"summary" : "Relative Path Traversal (CWE-23) in chunked uploads in oneup/uploader-bundle",
"details" : "### Impact\nThe vulnerability was identified in the web service for a chunked file\nupload. While the names of the POST parameters vary with the used\nfrontend, their values are always used in the same way to build a path\nwhere the chunks are stored and assembled temporarily. By not validating\nthese parameters properly, OneupUploaderBundle is susceptible to a path\ntraversal vulnerability which can be exploited to upload files to\narbitrary folders on the filesystem. The assembly process can further be\nmisused with some restrictions to delete and copy files to other\nlocations.\n\nThe vulnerability can be exploited by any users that have legitimate\naccess to the upload functionality and can lead to arbitrary code\nexecution, denial of service and disclosure of confidential information.\n\n### Patches\nYes, see version 1.9.3 and 2.1.5.\n\n### References\nhttps://owasp.org/www-community/attacks/Path_Traversal\n\n### Credits:\nThis security vulnerability was found by Thibaud Kehler of SySS GmbH.\nE-Mail: thibaud.kehler@syss.de",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "oneup/uploader-bundle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0"
}, {
"fixed" : "2.1.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "oneup/uploader-bundle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.0.0"
}, {
"fixed" : "1.9.3"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/1up-lab/OneupUploaderBundle/security/advisories/GHSA-x8wj-6m73-gfqp"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-5237"
}, {
"type" : "WEB",
"url" : "https://github.com/1up-lab/OneupUploaderBundle/commit/a6011449b716f163fe1ae323053077e59212350c"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/oneup/uploader-bundle/CVE-2020-5237.yaml"
}, {
"type" : "WEB",
"url" : "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-003.txt"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-22", "CWE-23" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2020-02-05T13:52:02Z",
"nvd_published_at" : "2020-02-05T14:15:00Z"
}
}