CVSS 3.1 Score 7.5 of 10 (high)


Published Jul 13, 2023
Updated: Oct 24, 2023
CWE ID 400
CWE ID 459


CVE-2023-35945 is a high-severity vulnerability affecting the Envoy cloud-native proxy. This vulnerability exists in Envoy's HTTP/2 codec and can lead to a memory leak and denial of service if an upstream server sends an immediate `RST_STREAM` followed by `GOAWAY` frames. The vulnerability is caused by a cleanup code that skips de-allocation of bookkeeping structures and compressed headers. The affected versions of Envoy have been patched, with versions 1.26.3, 1.25.8, 1.24.9, and 1.23.11 containing the fix. The vulnerability poses a potential danger to organizations using Envoy as it can be exploited to exhaust memory resources and disrupt services.

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