CVE-2024-53270: high-severity vulnerability in envoyproxy envoy
HTTP/1: sending overload crashes when the request is reset beforehand in envoy
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.7%
exploitation probability
0.7%top 48% of all CVEs
observed exploitation
nono source reports it
Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions `sendOverloadError` is going to assume the active request exists when `envoy.load_shed_points.http1_server_abort_dispatch` is configured. If `active_request` is nullptr, only onMessageBeginImpl() is called. However, the `onMessageBeginImpl` will directly return ok status if the stream is already reset leading to the nullptr reference. The downstream reset can actually happen during the H/2 upstream reset. As a result envoy may crash. This issue has been addressed in releases 1.32.3, 1.31.5, 1.30.9, and 1.29.12. Users are advised to upgrade. Users unable to upgrade may disable `http1_server_abort_dispatch` load shed point and/or use a high threshold.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
envoyproxy · envoyRelated CVEs — envoyproxy envoy
In the same product, most dangerous first.
CVE-2024-30255MEDIUMHTTP/2: CPU exhaustion due to CONTINUATION frame floodEPSS 87.8%CVE-2024-27919HIGHHTTP/2: memory exhaustion due to CONTINUATION frame floodEPSS 86.7%CVE-2021-29492HIGHBypass of path matching rules using escaped slash charactersEPSS 66.2%CVE-2021-32777HIGHIncorrect concatenation of multiple value request headers in ext-authz extensionEPSS 3.3%CVE-2021-21378HIGHJWT authentication bypass with unknown issuer tokenEPSS 1.7%CVE-2022-29225HIGHZip bomb vulnerability in EnvoyEPSS 1.6%