CVE - CVE-2024-27919

CVE-ID
CVE-2024-27919	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5 URL:https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5 MISC:https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r URL:https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r MLIST:[oss-security] 20240403 CERT/CC VU#421644: HTTP/2 CONTINUATION frames can be utilized for DoS attacks URL:http://www.openwall.com/lists/oss-security/2024/04/03/16 MLIST:[oss-security] 20240405 Envoy security releases [1.29.3, 1.28.2, 1.27.4, 1.26.8] are now available URL:http://www.openwall.com/lists/oss-security/2024/04/05/3
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20240228	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240228)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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