ghsa-wfgj-wrgh-h3r3
Vulnerability from github
Summary
While examining the "App Link assetlinks.json file could not be found" vulnerability detected by MobSF, we, as the Trendyol Application Security team, noticed that a GET request was sent to the "/.well-known/assetlinks.json" endpoint for all hosts written with "android:host". In the AndroidManifest.xml file.
Since MobSF does not perform any input validation when extracting the hostnames in "android:host", requests can also be sent to local hostnames. This may cause SSRF vulnerability.
Details
Example <intent-filter structure in AndroidManifest.xml:
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:host="192.168.1.102/user/delete/1#" android:scheme="http" />
</intent-filter>
We defined it as android:host="192.168.1.102/user/delete/1#". Here, the "#" character at the end of the host prevents requests from being sent to the "/.well-known/assetlinks.json" endpoint and ensures that requests are sent to the endpoint before it.
PoC
https://drive.google.com/file/d/1nbKMd2sKosbJef5Mh4DxjcHcQ8Hw0BNR/view?usp=share_link
Impact
The attacker can cause the server to make a connection to internal-only services within the organization's infrastructure.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "mobsfscan"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.3.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-29190"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2024-03-22T23:54:53Z",
"nvd_published_at": "2024-03-22T23:15:07Z",
"severity": "HIGH"
},
"details": "### Summary\nWhile examining the \"App Link assetlinks.json file could not be found\" vulnerability detected by MobSF, we, as the Trendyol Application Security team, noticed that a GET request was sent to the \"/.well-known/assetlinks.json\" endpoint for all hosts written with \"android:host\". In the AndroidManifest.xml file.\n\nSince MobSF does not perform any input validation when extracting the hostnames in \"android:host\", requests can also be sent to local hostnames. This may cause SSRF vulnerability.\n\n### Details\nExample \u003cintent-filter structure in AndroidManifest.xml:\n\n```\n\u003cintent-filter android:autoVerify=\"true\"\u003e\n\u003caction android:name=\"android.intent.action.VIEW\" /\u003e\n\u003ccategory android:name=\"android.intent.category.DEFAULT\" /\u003e\n\u003ccategory android:name=\"android.intent.category.BROWSABLE\" /\u003e\n\u003cdata android:host=\"192.168.1.102/user/delete/1#\" android:scheme=\"http\" /\u003e\n\u003c/intent-filter\u003e\n```\n\n\nWe defined it as android:host=\"192.168.1.102/user/delete/1#\". Here, the \"#\" character at the end of the host prevents requests from being sent to the \"/.well-known/assetlinks.json\" endpoint and ensures that requests are sent to the endpoint before it.\n\n\n\u003cimg width=\"617\" alt=\"image\" src=\"https://github.com/MobSF/Mobile-Security-Framework-MobSF/assets/150332295/c570cb00-e947-4ad7-af80-26d46c0ad3f7\"\u003e\n\n\n### PoC\nhttps://drive.google.com/file/d/1nbKMd2sKosbJef5Mh4DxjcHcQ8Hw0BNR/view?usp=share_link\n\n\n### Impact\nThe attacker can cause the server to make a connection to internal-only services within the organization\u0027s infrastructure.\n",
"id": "GHSA-wfgj-wrgh-h3r3",
"modified": "2024-03-23T22:31:15Z",
"published": "2024-03-22T23:54:53Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHSA-wfgj-wrgh-h3r3"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-29190"
},
{
"type": "WEB",
"url": "https://github.com/MobSF/Mobile-Security-Framework-MobSF/commit/5a8eeee73c5f504a6c3abdf2a139a13804efdb77"
},
{
"type": "WEB",
"url": "https://github.com/MobSF/mobsfscan/commit/61fd40b477bbf9d204eb8c5a83a86c396d839798"
},
{
"type": "WEB",
"url": "https://github.com/MobSF/mobsfscan/commit/cd01b71770a6e56c1c71b0e5f454e7b6c9c64ef4"
},
{
"type": "WEB",
"url": "https://drive.google.com/file/d/1nbKMd2sKosbJef5Mh4DxjcHcQ8Hw0BNR/view?usp=share_link"
},
{
"type": "PACKAGE",
"url": "https://github.com/MobSF/Mobile-Security-Framework-MobSF"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "SSRF Vulnerability on assetlinks_check(act_name, well_knowns)"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.