Red Hat Security Advisory: rh-varnish6-varnish security update
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): * 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.
AI Analysis
Technical Summary
CVE-2024-30156 is a denial of service vulnerability in Varnish Cache related to an HTTP/2 Broken Window Attack. Varnish Cache accelerates web servers by caching web pages in memory. This vulnerability could allow an attacker to cause a denial of service condition. Red Hat released an update (varnish-6.6.2-3.el9_2.2) for multiple Red Hat Enterprise Linux 9.2 Extended Update Support variants to fix this issue. The advisory references Red Hat's errata RHSA-2024:2820 and provides packages for x86_64, s390x, ppc64le, and aarch64 architectures. No CVSS score is provided in the advisory.
Potential Impact
The vulnerability may result in denial of service against systems running vulnerable versions of Varnish Cache, potentially disrupting web acceleration services. The impact is rated as important by Red Hat, indicating a significant but not critical security risk. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released an official security update to address this vulnerability. Users should apply the varnish update version 6.6.2-3.el9_2.2 or later available for Red Hat Enterprise Linux 9.2 Extended Update Support and related variants. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: rh-varnish6-varnish security update
Description
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): * 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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-30156 is a denial of service vulnerability in Varnish Cache related to an HTTP/2 Broken Window Attack. Varnish Cache accelerates web servers by caching web pages in memory. This vulnerability could allow an attacker to cause a denial of service condition. Red Hat released an update (varnish-6.6.2-3.el9_2.2) for multiple Red Hat Enterprise Linux 9.2 Extended Update Support variants to fix this issue. The advisory references Red Hat's errata RHSA-2024:2820 and provides packages for x86_64, s390x, ppc64le, and aarch64 architectures. No CVSS score is provided in the advisory.
Potential Impact
The vulnerability may result in denial of service against systems running vulnerable versions of Varnish Cache, potentially disrupting web acceleration services. The impact is rated as important by Red Hat, indicating a significant but not critical security risk. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released an official security update to address this vulnerability. Users should apply the varnish update version 6.6.2-3.el9_2.2 or later available for Red Hat Enterprise Linux 9.2 Extended Update Support and related variants. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:2820
- Cve Count
- 1
Threat ID: 6a3da1f74853345fc1834c73
Added to database: 06/25/2026, 21:47:35 UTC
Last enriched: 06/25/2026, 22:50:15 UTC
Last updated: 09/10/2026, 19:36:48 UTC
Views: 14
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