CVE-2024-30156
varnish: HTTP/2 Broken Window Attack may result in denial of service
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Varnish Cache before 7.3.2 and 7.4.x before 7.4.3 (and before 6.0.13 LTS), and Varnish Enterprise 6 before 6.0.12r6, allows credits exhaustion for an HTTP/2 connection control flow window, aka a Broke Window Attack.
Varnish Cache anterior a 7.3.2 y 7.4.x anterior a 7.4.3 (y anterior a 6.0.13 LTS), y Varnish Enterprise 6 anterior a 6.0.12r6, permite el agotamiento de los créditos para una ventana de flujo de control de conexión HTTP/2, también conocido como ataque de ventana rota.
A flaw was found in the Varnish cache server, with HTTP/2 support enabled, that may allow a Denial of Service type of attack. A malicious actor can cause the server to run out of credits during the HTTP/2 connection control flow. As a consequence, the server will stop to properly process the active HTTP streams, retaining the already allocated resources, leading to resource starvation.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2024-03-24 CVE Reserved
- 2024-03-24 CVE Published
- 2024-03-24 EPSS Updated
- 2024-11-21 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
- CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://varnish-cache.org/docs/7.5/whats-new/changes-7.5.html#security | ||
| https://varnish-cache.org/security/VSV00014.html |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-30156 | 2024-07-31 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2271486 | 2024-07-31 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
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| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | * | - |
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Aus Search vendor "Redhat" for product "Rhel Aus" | * | - |
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| Redhat Search vendor "Redhat" | Rhel E4s Search vendor "Redhat" for product "Rhel E4s" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Eus Search vendor "Redhat" for product "Rhel Eus" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Software Collections Search vendor "Redhat" for product "Rhel Software Collections" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Tus Search vendor "Redhat" for product "Rhel Tus" | * | - |
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| Alma Search vendor "Alma" | Linux Search vendor "Alma" for product "Linux" | * | - |
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| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | * | - |
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Aus Search vendor "Redhat" for product "Rhel Aus" | * | - |
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| Redhat Search vendor "Redhat" | Rhel E4s Search vendor "Redhat" for product "Rhel E4s" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Eus Search vendor "Redhat" for product "Rhel Eus" | * | - |
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| Redhat Search vendor "Redhat" | Rhel Tus Search vendor "Redhat" for product "Rhel Tus" | * | - |
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| Rocky Search vendor "Rocky" | Linux Search vendor "Rocky" for product "Linux" | * | - |
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