GHSA-QWX8-MXXX-MG96
Vulnerability from github – Published: 2023-02-02 19:26 – Updated: 2023-02-02 19:27Description
The export feature lets a user export a single entry or a set of entries in a given format (e.g. PDF, MOBI, TXT).
For example, https://yourinstance.wallabag.org/export/45.pdf will export the entry with id 45 in PDF format.
Since wallabag 2.0.0-alpha.1, this feature is vulnerable to an insecure direct object reference attack. A logged user can export any single entry without ownership validation.
This is due to a lack of access validation in the downloadEntryAction method.
You should immediately patch your instance to version 2.5.3 or higher if you have more than one user and/or having open registration.
Resolution
A user check is now done in the vulnerable method before sending the exported entry.
The Entry retrieval through a ParamConverter has also been replaced with a call to the EntryRepository in order to prevent any information disclosure through response discrepancy.
Workaround
If you are unable to update to the latest version or if you want to temporarily limit risk of exploitation, you may consider blocking requests to the endpoint /export/*.
E.g. with nginx:
location /export {
deny all;
}
Credits
We would like to thank @bAuh0lz for reporting this issue through huntr.dev.
Reference: https://www.huntr.dev/bounties/3adef66f-fc86-4e6d-a540-2ffa59342ff0/
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "wallabag/wallabag"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0-alpha.1"
},
{
"fixed": "2.5.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-0609"
],
"database_specific": {
"cwe_ids": [
"CWE-285"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-02T19:26:44Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "# Description\n\nThe export feature lets a user export a single entry or a set of entries in a given format (_e.g. PDF, MOBI, TXT_).\n\nFor example, `https://yourinstance.wallabag.org/export/45.pdf` will export the entry with id 45 in PDF format.\n\nSince wallabag 2.0.0-alpha.1, this feature is vulnerable to an insecure direct object reference attack. A logged user can export any single entry without ownership validation.\n\nThis is due to a lack of access validation in the `downloadEntryAction` method.\n\n**You should immediately patch your instance to version 2.5.3 or higher if you have more than one user and/or having open registration.**\n\n# Resolution\n\nA user check is now done in the vulnerable method before sending the exported entry.\n\nThe `Entry` retrieval through a `ParamConverter` has also been replaced with a call to the `EntryRepository` in order to prevent any information disclosure through response discrepancy.\n\n# Workaround\n\nIf you are unable to update to the latest version or if you want to temporarily limit risk of exploitation, you may consider blocking requests to the endpoint `/export/*`.\n\nE.g. with nginx:\n\n``` nginx\n location /export {\n deny all;\n }\n```\n\n# Credits\n\nWe would like to thank @bAuh0lz for reporting this issue through huntr.dev.\n\nReference: https://www.huntr.dev/bounties/3adef66f-fc86-4e6d-a540-2ffa59342ff0/ ",
"id": "GHSA-qwx8-mxxx-mg96",
"modified": "2023-02-02T19:27:29Z",
"published": "2023-02-02T19:26:44Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/wallabag/wallabag/security/advisories/GHSA-qwx8-mxxx-mg96"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0609"
},
{
"type": "WEB",
"url": "https://github.com/wallabag/wallabag/commit/0f7460dbab9e29f4f7d2944aca20210f828b6abb"
},
{
"type": "PACKAGE",
"url": "https://github.com/wallabag/wallabag"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/3adef66f-fc86-4e6d-a540-2ffa59342ff0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "wallabag contains Improper Authorization via export feature"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.