gsd-2016-0752
Vulnerability from gsd
Modified
2016-01-25 00:00
Details
There is a possible directory traversal and information leak vulnerability in
Action View. This vulnerability has been assigned the CVE identifier
CVE-2016-0752.
Versions Affected: All.
Not affected: None.
Fixed Versions: 5.0.0.beta1.1, 4.2.5.1, 4.1.14.1, 3.2.22.1
Impact
------
Applications that pass unverified user input to the `render` method in a
controller may be vulnerable to an information leak vulnerability.
Impacted code will look something like this:
```ruby
def index
render params[:id]
end
```
Carefully crafted requests can cause the above code to render files from
unexpected places like outside the application's view directory, and can
possibly escalate this to a remote code execution attack.
All users running an affected release should either upgrade or use one of the
workarounds immediately.
Releases
--------
The FIXED releases are available at the normal locations.
Workarounds
-----------
A workaround to this issue is to not pass arbitrary user input to the `render`
method. Instead, verify that data before passing it to the `render` method.
For example, change this:
```ruby
def index
render params[:id]
end
```
To this:
```ruby
def index
render verify_template(params[:id])
end
private
def verify_template(name)
# add verification logic particular to your application here
end
```
Patches
-------
To aid users who aren't able to upgrade immediately we have provided patches for
the two supported release series. They are in git-am format and consist of a
single changeset.
* 3-2-render_data_leak.patch - Patch for 3.2 series
* 4-1-render_data_leak.patch - Patch for 4.1 series
* 4-2-render_data_leak.patch - Patch for 4.2 series
* 5-0-render_data_leak.patch - Patch for 5.0 series
Please note that only the 4.1.x and 4.2.x series are supported at present. Users
of earlier unsupported releases are advised to upgrade as soon as possible as we
cannot guarantee the continued availability of security fixes for unsupported
releases.
Credits
-------
Thanks John Poulin for reporting this!
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2016-0752",
"description": "Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application\u0027s unrestricted use of the render method and providing a .. (dot dot) in a pathname.",
"id": "GSD-2016-0752",
"references": [
"https://www.suse.com/security/cve/CVE-2016-0752.html",
"https://www.debian.org/security/2016/dsa-3464",
"https://access.redhat.com/errata/RHSA-2016:0455",
"https://access.redhat.com/errata/RHSA-2016:0454",
"https://access.redhat.com/errata/RHSA-2016:0296",
"https://packetstormsecurity.com/files/cve/CVE-2016-0752"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "actionpack",
"purl": "pkg:gem/actionpack"
}
}
],
"aliases": [
"CVE-2016-0752"
],
"details": "There is a possible directory traversal and information leak vulnerability in\nAction View. This vulnerability has been assigned the CVE identifier\nCVE-2016-0752.\n\nVersions Affected: All.\nNot affected: None.\nFixed Versions: 5.0.0.beta1.1, 4.2.5.1, 4.1.14.1, 3.2.22.1\n\nImpact\n------\nApplications that pass unverified user input to the `render` method in a\ncontroller may be vulnerable to an information leak vulnerability.\n\nImpacted code will look something like this:\n\n```ruby\ndef index\n render params[:id]\nend\n```\n\nCarefully crafted requests can cause the above code to render files from\nunexpected places like outside the application\u0027s view directory, and can\npossibly escalate this to a remote code execution attack.\n\nAll users running an affected release should either upgrade or use one of the\nworkarounds immediately.\n\nReleases\n--------\nThe FIXED releases are available at the normal locations.\n\nWorkarounds\n-----------\nA workaround to this issue is to not pass arbitrary user input to the `render`\nmethod. Instead, verify that data before passing it to the `render` method.\n\nFor example, change this:\n\n```ruby\ndef index\n render params[:id]\nend\n```\n\nTo this:\n\n```ruby\ndef index\n render verify_template(params[:id])\nend\n\nprivate\ndef verify_template(name)\n # add verification logic particular to your application here\nend\n```\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches for\nthe two supported release series. They are in git-am format and consist of a\nsingle changeset.\n\n* 3-2-render_data_leak.patch - Patch for 3.2 series\n* 4-1-render_data_leak.patch - Patch for 4.1 series\n* 4-2-render_data_leak.patch - Patch for 4.2 series\n* 5-0-render_data_leak.patch - Patch for 5.0 series\n\nPlease note that only the 4.1.x and 4.2.x series are supported at present. Users\nof earlier unsupported releases are advised to upgrade as soon as possible as we\ncannot guarantee the continued availability of security fixes for unsupported\nreleases.\n\nCredits\n-------\nThanks John Poulin for reporting this!\n",
"id": "GSD-2016-0752",
"modified": "2016-01-25T00:00:00.000Z",
"published": "2016-01-25T00:00:00.000Z",
"references": [
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"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/335P1DcLG00"
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"dateAdded": "2022-03-25",
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"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Directory traversal vulnerability in Action View in Ruby on Rails allows remote attackers to read arbitrary files.",
"vendorProject": "Rails",
"vulnerabilityName": "Ruby on Rails Directory Traversal Vulnerability"
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"github.com/rubysec/ruby-advisory-db": {
"cve": "2016-0752",
"cvss_v2": 5.0,
"cvss_v3": 7.5,
"date": "2016-01-25",
"description": "There is a possible directory traversal and information leak vulnerability in\nAction View. This vulnerability has been assigned the CVE identifier\nCVE-2016-0752.\n\nVersions Affected: All.\nNot affected: None.\nFixed Versions: 5.0.0.beta1.1, 4.2.5.1, 4.1.14.1, 3.2.22.1\n\nImpact\n------\nApplications that pass unverified user input to the `render` method in a\ncontroller may be vulnerable to an information leak vulnerability.\n\nImpacted code will look something like this:\n\n```ruby\ndef index\n render params[:id]\nend\n```\n\nCarefully crafted requests can cause the above code to render files from\nunexpected places like outside the application\u0027s view directory, and can\npossibly escalate this to a remote code execution attack.\n\nAll users running an affected release should either upgrade or use one of the\nworkarounds immediately.\n\nReleases\n--------\nThe FIXED releases are available at the normal locations.\n\nWorkarounds\n-----------\nA workaround to this issue is to not pass arbitrary user input to the `render`\nmethod. Instead, verify that data before passing it to the `render` method.\n\nFor example, change this:\n\n```ruby\ndef index\n render params[:id]\nend\n```\n\nTo this:\n\n```ruby\ndef index\n render verify_template(params[:id])\nend\n\nprivate\ndef verify_template(name)\n # add verification logic particular to your application here\nend\n```\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches for\nthe two supported release series. They are in git-am format and consist of a\nsingle changeset.\n\n* 3-2-render_data_leak.patch - Patch for 3.2 series\n* 4-1-render_data_leak.patch - Patch for 4.1 series\n* 4-2-render_data_leak.patch - Patch for 4.2 series\n* 5-0-render_data_leak.patch - Patch for 5.0 series\n\nPlease note that only the 4.1.x and 4.2.x series are supported at present. Users\nof earlier unsupported releases are advised to upgrade as soon as possible as we\ncannot guarantee the continued availability of security fixes for unsupported\nreleases.\n\nCredits\n-------\nThanks John Poulin for reporting this!\n",
"framework": "rails",
"gem": "actionview",
"ghsa": "xrr4-p6fq-hjg7",
"notes": "\u0027~\u003e 3.2.22.1\u0027 is found in gems/actionpack/CVE-2016-0752.yml",
"patched_versions": [
"\u003e= 5.0.0.beta1.1",
"~\u003e 4.2.5, \u003e= 4.2.5.1",
"~\u003e 4.1.14, \u003e= 4.1.14.1"
],
"title": "Possible Information Leak Vulnerability in Action View",
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/335P1DcLG00"
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c3.2.22.1",
"affected_versions": "All versions before 3.2.22.1",
"credit": "John Poulin",
"cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-22",
"CWE-937"
],
"date": "2019-08-08",
"description": "Applications that pass unverified user input to the `render` method in a controller may be vulnerable to an information leak vulnerability. Carefully crafted requests can render files from unexpected places like outside the application\u0027s view directory, and can possibly escalate this to a remote code execution attack.",
"fixed_versions": [
"3.2.22.1"
],
"identifier": "CVE-2016-0752",
"identifiers": [
"CVE-2016-0752"
],
"package_slug": "gem/actionpack",
"pubdate": "2016-02-15",
"solution": "Upgrade to latest, apply patches or use workaround. See provided link.",
"title": "Possible Information Leak Vulnerability in ActionView",
"urls": [
"https://groups.google.com/forum/#!topic/rubyonrails-security/335P1DcLG00"
],
"uuid": "83ce344a-9c70-4c28-aa71-ee040cb07b68"
},
{
"affected_range": "\u003e=5.0.0.alpha \u003c5.0.0.beta1.1||\u003e=4.2.0.alpha \u003c4.2.5.1||\u003c4.1.14.1",
"affected_versions": "All versions starting from 5.0.0.alpha before 5.0.0.beta1.1, all versions starting from 4.2.0.alpha before 4.2.5.1, all versions before 4.1.14.1",
"credit": "John Poulin",
"cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
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"CWE-22",
"CWE-937"
],
"date": "2019-08-08",
"description": "Applications that pass unverified user input to the `render` method in a controller may be vulnerable to an information leak vulnerability. Carefully crafted requests can render files from unexpected places like outside the application\u0027s view directory, and can possibly escalate this to a remote code execution attack. ",
"fixed_versions": [
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"4.2.5.1",
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],
"identifier": "CVE-2016-0752",
"identifiers": [
"CVE-2016-0752"
],
"package_slug": "gem/actionview",
"pubdate": "2016-02-15",
"solution": "Upgrade to latest, apply patches or use workaround. See provided link.",
"title": "Possible Information Leak Vulnerability",
"urls": [
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],
"uuid": "2cb5b4be-915d-4ffe-beea-95146cfa6061"
},
{
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"affected_versions": "All versions starting from 4.0.0 up to 5.0.0",
"cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
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"CWE-22",
"CWE-937"
],
"date": "2019-08-08",
"description": "The Rails gem allows remote attackers to read arbitrary files by leveraging an application\u0027s unrestricted use of the render method and providing a `..` in a pathname.",
"fixed_versions": [
"5.0.1"
],
"identifier": "CVE-2016-0752",
"identifiers": [
"CVE-2016-0752"
],
"not_impacted": "All versions before 4.0.0, all versions after 5.0.0",
"package_slug": "gem/rails",
"pubdate": "2016-02-16",
"solution": "Upgrade to versions 5.0.1 or above.",
"title": "Path Traversal",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2016-0752"
],
"uuid": "f1576168-f930-4a11-b848-d02bcfad912f"
}
]
},
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},
{
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},
{
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},
{
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},
{
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},
{
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{
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{
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{
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{
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{
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"operator": "OR"
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]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2016-0752"
},
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"data_version": "4.0",
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"value": "Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application\u0027s unrestricted use of the render method and providing a .. (dot dot) in a pathname."
}
]
},
"problemtype": {
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{
"description": [
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"value": "CWE-22"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "[ruby-security-ann] 20160125 [CVE-2016-0752] Possible Information Leak Vulnerability in Action View",
"refsource": "MLIST",
"tags": [],
"url": "https://groups.google.com/forum/message/raw?msg=ruby-security-ann/335P1DcLG00/JXcBnTtZEgAJ"
},
{
"name": "[oss-security] 20160125 [CVE-2016-0752] Possible Information Leak Vulnerability in Action View",
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"url": "http://www.openwall.com/lists/oss-security/2016/01/25/13"
},
{
"name": "81801",
"refsource": "BID",
"tags": [],
"url": "http://www.securityfocus.com/bid/81801"
},
{
"name": "SUSE-SU-2016:1146",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html"
},
{
"name": "FEDORA-2016-fa0dec2360",
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178044.html"
},
{
"name": "RHSA-2016:0296",
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{
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},
{
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{
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{
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},
{
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{
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},
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"accessVector": "NETWORK",
"authentication": "NONE",
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"confidentialityImpact": "PARTIAL",
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"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
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"severity": "MEDIUM"
},
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
"baseScore": 7.5,
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"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2019-08-08T15:43Z",
"publishedDate": "2016-02-16T02:59Z"
}
}
}
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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.