RHSA-2024:1690
Vulnerability from csaf_redhat - Published: 2024-04-08 09:21 - Updated: 2026-06-28 12:43Summary
Red Hat Security Advisory: varnish security update
Severity
Important
Notes
Topic: An update for varnish is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up.
Security Fix(es):
* varnish: HTTP/2 Broken Window Attack may result in denial of service (CVE-2024-30156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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.
7.5 (High)
Affected products
Fixed
26 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-0:6.0.13-1.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-0:6.0.13-1.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-0:6.0.13-1.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-0:6.0.13-1.module+el8.9.0+21617+7578fa11.src::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-0:6.0.13-1.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-devel-0:6.0.13-1.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-devel-0:6.0.13-1.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-devel-0:6.0.13-1.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-devel-0:6.0.13-1.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-docs-0:6.0.13-1.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-docs-0:6.0.13-1.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-docs-0:6.0.13-1.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-docs-0:6.0.13-1.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-0:0.15.0-6.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-0:0.15.0-6.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-0:0.15.0-6.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-0:0.15.0-6.module+el8.9.0+21617+7578fa11.src::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-0:0.15.0-6.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debuginfo-0:0.15.0-6.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debuginfo-0:0.15.0-6.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debuginfo-0:0.15.0-6.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debuginfo-0:0.15.0-6.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.aarch64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.s390x::varnish:6 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.x86_64::varnish:6 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
9 references
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"AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.aarch64::varnish:6",
"AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.ppc64le::varnish:6",
"AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.s390x::varnish:6",
"AppStream-8.9.0.Z.MAIN:varnish-modules-debugsource-0:0.15.0-6.module+el8.9.0+21617+7578fa11.x86_64::varnish:6"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "varnish: HTTP/2 Broken Window Attack may result in denial of service"
}
]
}
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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.
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