7.5

CVE-2024-30255

HTTP/2: CPU exhaustion due to CONTINUATION frame flood

Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy's HTTP/2 codec allows the client to send an unlimited number of CONTINUATION frames even after exceeding Envoy's header map limits. This allows an attacker to send a sequence of CONTINUATION frames without the END_HEADERS bit set causing CPU utilization, consuming approximately 1 core per 300Mbit/s of traffic and culminating in denial of service through CPU exhaustion. Users should upgrade to version 1.29.3, 1.28.2, 1.27.4, or 1.26.8 to mitigate the effects of the CONTINUATION flood. As a workaround, disable HTTP/2 protocol for downstream connections.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Envoyproxy ≫ Envoy Version < 1.26.8
Envoyproxy ≫ Envoy Version >= 1.27.0 < 1.27.4
Envoyproxy ≫ Envoy Version >= 1.28.0 < 1.28.2
Envoyproxy ≫ Envoy Version >= 1.29.0 < 1.29.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 87.81% 0.997
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
security-advisories@github.com 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-390 Detection of Error Condition Without Action

The product detects a specific error, but takes no actions to handle the error.

http://www.openwall.com/lists/oss-security/2024/04/03/16
Third Party Advisory
Mailing List
https://www.kb.cert.org/vuls/id/421644
http://www.openwall.com/lists/oss-security/2024/04/05/3
Mailing List
https://github.com/envoyproxy/envoy/security/advisories/GHSA-j654-3ccm-vfmm
Patch
Third Party Advisory