GSD-2016-0751
Vulnerability from gsd - Updated: 2016-01-25 00:00Details
There is a possible object leak which can lead to a denial of service
vulnerability in Action Pack. This vulnerability has been
assigned the CVE identifier CVE-2016-0751.
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
------
A carefully crafted accept header can cause a global cache of mime types to
grow indefinitely which can lead to a possible denial of service attack in
Action Pack.
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
-----------
This attack can be mitigated by a proxy that only allows known mime types in
the Accept header.
Placing the following code in an initializer will also mitigate the issue:
```ruby
require 'action_dispatch/http/mime_type'
Mime.const_set :LOOKUP, Hash.new { |h,k|
Mime::Type.new(k) unless k.blank?
}
```
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.
* 5-0-mime_types_leak.patch - Patch for 5.0 series
* 4-2-mime_types_leak.patch - Patch for 4.2 series
* 4-1-mime_types_leak.patch - Patch for 4.1 series
* 3-2-mime_types_leak.patch - Patch for 3.2 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
-------
Aaron Patterson <3<3
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2016-0751",
"description": "actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack 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 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header.",
"id": "GSD-2016-0751",
"references": [
"https://www.suse.com/security/cve/CVE-2016-0751.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"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "actionpack",
"purl": "pkg:gem/actionpack"
}
}
],
"aliases": [
"CVE-2016-0751",
"GHSA-ffpv-c4hm-3x6v"
],
"details": "There is a possible object leak which can lead to a denial of service\nvulnerability in Action Pack. This vulnerability has been\nassigned the CVE identifier CVE-2016-0751.\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------\nA carefully crafted accept header can cause a global cache of mime types to\ngrow indefinitely which can lead to a possible denial of service attack in\nAction Pack.\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-----------\nThis attack can be mitigated by a proxy that only allows known mime types in\nthe Accept header.\n\nPlacing the following code in an initializer will also mitigate the issue:\n\n```ruby\nrequire \u0027action_dispatch/http/mime_type\u0027\n\nMime.const_set :LOOKUP, Hash.new { |h,k|\n Mime::Type.new(k) unless k.blank?\n}\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* 5-0-mime_types_leak.patch - Patch for 5.0 series\n* 4-2-mime_types_leak.patch - Patch for 4.2 series\n* 4-1-mime_types_leak.patch - Patch for 4.1 series\n* 3-2-mime_types_leak.patch - Patch for 3.2 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-------\nAaron Patterson \u003c3\u003c3\n",
"id": "GSD-2016-0751",
"modified": "2016-01-25T00:00:00.000Z",
"published": "2016-01-25T00:00:00.000Z",
"references": [
{
"type": "WEB",
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/9oLY_FCzvoc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": 5.0,
"type": "CVSS_V2"
},
{
"score": 7.5,
"type": "CVSS_V3"
}
],
"summary": "Possible Object Leak and Denial of Service attack in Action Pack"
}
},
"namespaces": {
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"version": {
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"value": "actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack 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 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header."
}
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"name": "openSUSE-SU-2016:0372",
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00043.html"
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"name": "[ruby-security-ann] 20160125 [CVE-2016-0751] Possible Object Leak and Denial of Service attack in Action Pack",
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"url": "https://groups.google.com/forum/message/raw?msg=ruby-security-ann/9oLY_FCzvoc/5CDXbvpYEgAJ"
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"url": "http://www.debian.org/security/2016/dsa-3464"
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"url": "http://rhn.redhat.com/errata/RHSA-2016-0296.html"
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},
"github.com/rubysec/ruby-advisory-db": {
"cve": "2016-0751",
"cvss_v2": 5.0,
"cvss_v3": 7.5,
"date": "2016-01-25",
"description": "There is a possible object leak which can lead to a denial of service\nvulnerability in Action Pack. This vulnerability has been\nassigned the CVE identifier CVE-2016-0751.\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------\nA carefully crafted accept header can cause a global cache of mime types to\ngrow indefinitely which can lead to a possible denial of service attack in\nAction Pack.\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-----------\nThis attack can be mitigated by a proxy that only allows known mime types in\nthe Accept header.\n\nPlacing the following code in an initializer will also mitigate the issue:\n\n```ruby\nrequire \u0027action_dispatch/http/mime_type\u0027\n\nMime.const_set :LOOKUP, Hash.new { |h,k|\n Mime::Type.new(k) unless k.blank?\n}\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* 5-0-mime_types_leak.patch - Patch for 5.0 series\n* 4-2-mime_types_leak.patch - Patch for 4.2 series\n* 4-1-mime_types_leak.patch - Patch for 4.1 series\n* 3-2-mime_types_leak.patch - Patch for 3.2 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-------\nAaron Patterson \u003c3\u003c3\n",
"framework": "rails",
"gem": "actionpack",
"ghsa": "ffpv-c4hm-3x6v",
"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",
"~\u003e 3.2.22.1"
],
"title": "Possible Object Leak and Denial of Service attack in Action Pack",
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/9oLY_FCzvoc"
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003e=5.0.0.alpha \u003c5.0.0.beta1.1||\u003e=4.2.0.alpha \u003c4.2.5.1||\u003e=4.0.0.alpha \u003c4.1.14.1||\u003c3.2.22.1",
"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 starting from 4.0.0.alpha before 4.1.14.1, all versions before 3.2.22.1",
"credit": "Aaron Patterson",
"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-399",
"CWE-937"
],
"date": "2019-08-08",
"description": "A carefully crafted `Accept` header can cause a global cache of mime types to grow indefinitely which can lead to a possible denial of service attack in Action Pack.",
"fixed_versions": [
"3.2.22.1",
"4.1.14.1",
"4.2.5.1",
"5.0.0.beta1.1"
],
"identifier": "CVE-2016-0751",
"identifiers": [
"CVE-2016-0751"
],
"package_slug": "gem/actionpack",
"pubdate": "2016-02-15",
"solution": "Upgrade to latest, apply patches or use workaround. See provided link.",
"title": "Possible Object Leak and Denial of Service attack",
"urls": [
"https://groups.google.com/forum/#!topic/rubyonrails-security/9oLY_FCzvoc"
],
"uuid": "fc808d83-e46e-4d42-9d52-c1d29f8f4dfa"
}
]
},
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"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.1.2:rc3:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.6:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.10:rc2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.9:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.8:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.11:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.0:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.0.0:beta:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2016-0751"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack 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 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "[ruby-security-ann] 20160125 [CVE-2016-0751] Possible Object Leak and Denial of Service attack in Action Pack",
"refsource": "MLIST",
"tags": [],
"url": "https://groups.google.com/forum/message/raw?msg=ruby-security-ann/9oLY_FCzvoc/5CDXbvpYEgAJ"
},
{
"name": "[oss-security] 20160125 [CVE-2016-0751] Possible Object Leak and Denial of Service attack in Action Pack",
"refsource": "MLIST",
"tags": [],
"url": "http://www.openwall.com/lists/oss-security/2016/01/25/9"
},
{
"name": "81800",
"refsource": "BID",
"tags": [],
"url": "http://www.securityfocus.com/bid/81800"
},
{
"name": "SUSE-SU-2016:1146",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html"
},
{
"name": "FEDORA-2016-94e71ee673",
"refsource": "FEDORA",
"tags": [],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178043.html"
},
{
"name": "RHSA-2016:0296",
"refsource": "REDHAT",
"tags": [],
"url": "http://rhn.redhat.com/errata/RHSA-2016-0296.html"
},
{
"name": "FEDORA-2016-f486068393",
"refsource": "FEDORA",
"tags": [],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178067.html"
},
{
"name": "openSUSE-SU-2016:0372",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00043.html"
},
{
"name": "openSUSE-SU-2016:0363",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00034.html"
},
{
"name": "DSA-3464",
"refsource": "DEBIAN",
"tags": [],
"url": "http://www.debian.org/security/2016/dsa-3464"
},
{
"name": "1034816",
"refsource": "SECTRACK",
"tags": [],
"url": "http://www.securitytracker.com/id/1034816"
}
]
}
},
"impact": {
"baseMetricV2": {
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM"
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2019-08-08T15:43Z",
"publishedDate": "2016-02-16T02:59Z"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.