WID-SEC-W-2022-0198
Vulnerability from csaf_certbund - Published: 2022-01-25 23:00 - Updated: 2022-11-28 23:00Summary
Varnish HTTP Cache: Schwachstelle ermöglicht Offenlegung von Informationen und Cache Poisoning
Severity
Hoch
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Varnish ist ein Reverse-Proxy, der als HTTP-Beschleuniger verwendet wird.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Varnish HTTP Cache ausnutzen, um Informationen offenzulegen und ein Cache Poisoning zu verursachen.
Betroffene Betriebssysteme: - UNIX
- Linux
Es existiert eine Schwachstelle in Varnish HTTP Cache. Die Software ist anfällig für einen Request Smuggling-Angriff kann auf HTTP/1-Verbindungen. Die eingeschmuggelte Anfrage wird vom Varnish-Server als zusätzliche Anfrage behandelt, durchläuft die normale VCL-Verarbeitung und wird als falsche Antwort in die Client-Verbindung eingespeist. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um Informationen offenzulegen und ein Cache Poisoning zu verursachen.
Affected products
Known affected
5 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— |
References
15 references
{
"document": {
"aggregate_severity": {
"text": "hoch"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Varnish ist ein Reverse-Proxy, der als HTTP-Beschleuniger verwendet wird.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Varnish HTTP Cache ausnutzen, um Informationen offenzulegen und ein Cache Poisoning zu verursachen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- UNIX\n- Linux",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2022-0198 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0198.json"
},
{
"category": "self",
"summary": "WID-SEC-2022-0198 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0198"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2022-8649 vom 2022-11-28",
"url": "https://linux.oracle.com/errata/ELSA-2022-8649.html"
},
{
"category": "external",
"summary": "Varnish Security Advisory vom 2022-01-25",
"url": "https://varnish-cache.org/security/VSV00008.html"
},
{
"category": "external",
"summary": "Varnish Security Advisory vom 2022-01-25",
"url": "https://docs.varnish-software.com/security/VSV00008/"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:0421 vom 2022-02-03",
"url": "https://access.redhat.com/errata/RHSA-2022:0421"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2022-0418 vom 2022-02-03",
"url": "http://linux.oracle.com/errata/ELSA-2022-0418.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:0420 vom 2022-02-03",
"url": "https://access.redhat.com/errata/RHSA-2022:0420"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:0418 vom 2022-02-03",
"url": "https://access.redhat.com/errata/RHSA-2022:0418"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:0422 vom 2022-02-03",
"url": "https://access.redhat.com/errata/RHSA-2022:0422"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-2920 vom 2022-02-14",
"url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00014.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2022:4745 vom 2022-05-26",
"url": "https://access.redhat.com/errata/RHSA-2022:4745"
},
{
"category": "external",
"summary": "Debian Security Advisory DSA-5088 vom 2022-03-03",
"url": "https://lists.debian.org/debian-security-announce/2022/msg00055.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-5474-1 vom 2022-06-08",
"url": "https://ubuntu.com/security/notices/USN-5474-1"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS-2022-1632 vom 2022-08-23",
"url": "https://alas.aws.amazon.com/ALAS-2022-1632.html"
}
],
"source_lang": "en-US",
"title": "Varnish HTTP Cache: Schwachstelle erm\u00f6glicht Offenlegung von Informationen und Cache Poisoning",
"tracking": {
"current_release_date": "2022-11-28T23:00:00.000+00:00",
"generator": {
"date": "2024-08-15T17:27:15.908+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.5"
}
},
"id": "WID-SEC-W-2022-0198",
"initial_release_date": "2022-01-25T23:00:00.000+00:00",
"revision_history": [
{
"date": "2022-01-25T23:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2022-02-03T23:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Red Hat und Oracle Linux aufgenommen"
},
{
"date": "2022-02-07T23:00:00.000+00:00",
"number": "3",
"summary": "Referenz(en) aufgenommen: FEDORA-2022-2F14EC7663"
},
{
"date": "2022-02-13T23:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2022-03-03T23:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2022-05-26T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2022-06-08T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2022-08-23T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2022-11-28T23:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Oracle Linux aufgenommen"
}
],
"status": "final",
"version": "9"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Amazon Linux 2",
"product": {
"name": "Amazon Linux 2",
"product_id": "398363",
"product_identification_helper": {
"cpe": "cpe:/o:amazon:linux_2:-"
}
}
}
],
"category": "vendor",
"name": "Amazon"
},
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Open Source Varnish HTTP Cache \u003c 6.6.2",
"product": {
"name": "Open Source Varnish HTTP Cache \u003c 6.6.2",
"product_id": "T021818",
"product_identification_helper": {
"cpe": "cpe:/a:varnish_http_accelerator_integration_project:varnish:6.6.2"
}
}
},
{
"category": "product_name",
"name": "Open Source Varnish HTTP Cache \u003c 7.0.2",
"product": {
"name": "Open Source Varnish HTTP Cache \u003c 7.0.2",
"product_id": "T021819",
"product_identification_helper": {
"cpe": "cpe:/a:varnish_http_accelerator_integration_project:varnish:7.0.2"
}
}
},
{
"category": "product_name",
"name": "Open Source Varnish HTTP Cache \u003c LTS 6.0.10",
"product": {
"name": "Open Source Varnish HTTP Cache \u003c LTS 6.0.10",
"product_id": "T021820",
"product_identification_helper": {
"cpe": "cpe:/a:varnish_http_accelerator_integration_project:varnish:lts_6.0.10"
}
}
},
{
"category": "product_name",
"name": "Open Source Varnish HTTP Cache \u003c Plus 6.0.9r4",
"product": {
"name": "Open Source Varnish HTTP Cache \u003c Plus 6.0.9r4",
"product_id": "T021821",
"product_identification_helper": {
"cpe": "cpe:/a:varnish_http_accelerator_integration_project:varnish:plus_6.0.9r4"
}
}
},
{
"category": "product_name",
"name": "Open Source Varnish HTTP Cache \u003c Plus 4.1.11r6",
"product": {
"name": "Open Source Varnish HTTP Cache \u003c Plus 4.1.11r6",
"product_id": "T021822",
"product_identification_helper": {
"cpe": "cpe:/a:varnish_http_accelerator_integration_project:varnish:plus_4.1.11r6"
}
}
}
],
"category": "product_name",
"name": "Varnish HTTP Cache"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T004914",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "Ubuntu Linux",
"product": {
"name": "Ubuntu Linux",
"product_id": "T000126",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2022-23959",
"notes": [
{
"category": "description",
"text": "Es existiert eine Schwachstelle in Varnish HTTP Cache. Die Software ist anf\u00e4llig f\u00fcr einen Request Smuggling-Angriff kann auf HTTP/1-Verbindungen. Die eingeschmuggelte Anfrage wird vom Varnish-Server als zus\u00e4tzliche Anfrage behandelt, durchl\u00e4uft die normale VCL-Verarbeitung und wird als falsche Antwort in die Client-Verbindung eingespeist. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um Informationen offenzulegen und ein Cache Poisoning zu verursachen."
}
],
"product_status": {
"known_affected": [
"2951",
"67646",
"T000126",
"398363",
"T004914"
]
},
"release_date": "2022-01-25T23:00:00.000+00:00",
"title": "CVE-2022-23959"
}
]
}
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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.
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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.
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