cve-2024-27919
Vulnerability from cvelistv5
Published
2024-04-04 14:30
Modified
2025-02-13 17:47
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/04/03/16
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/04/05/3
security-advisories@github.comhttps://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5
security-advisories@github.comhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/04/03/16
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/04/05/3
af854a3a-2127-422b-91ae-364da2661108https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5
af854a3a-2127-422b-91ae-364da2661108https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r
Impacted products
Vendor Product Version
envoyproxy envoy Version: >= 1.29.0, < 1.29.2
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{
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