CVE-2023-35942: gRPC access log crash caused by the listener draining

Red Hat Security Advisory 2023-5174-01 - Red Hat OpenShift Service Mesh is the Red Hat distribution of the Istio service mesh project, tailored for installation into an on-premise OpenShift Container Platform installation. This advisory covers container images for the release.

Red Hat OpenShift Service Mesh Containers for 2.4.3 Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-35942: A flaw was found in Envoy, where gRPC access loggers using the listener's global scope can cause a use-after-free crash when the listener is drained. This issue can be triggered by a listener discovery service (LDS) update with the same gRPC access log configuration.

Red Hat Security Advisory 2023-4624-01 - Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise OpenShift Container Platform installation. Issues addressed include a memory leak vulnerability.

Red Hat OpenShift Service Mesh 2.3.6 Containers Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-35941: A flaw was found in Envoy, where a malicious client can construct credentials with permanent validity in a specific scenario. This issue is caused by some rare scenarios, such as the combination of host and expiration time, in which the HMAC payload can always be valid in the OAuth2 filter's HMAC check. * CVE-2023-35942: A flaw was found in Envoy, where gRPC access lo...

gRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional cases/ Three vectors were found that allow the following DOS attacks: - Unbounded memory buffering in the HPACK parser - Unbounded CPU consumption in the HPACK parser The unbounded CPU consumption is down to a copy that occurred per-input-block in the parser, and because that could be unbounded due to the memory copy bug we end up with an O(n^2) parsing loop, with n selected by the client. The unbounded memory buffering bugs: - The header size limit check was behind the string reading code, so we needed to first buffer up to a 4 gigabyte string before rejecting it as longer than 8 or 16kb. - HPACK varints have an encoding quirk whereby an infinite number of 0’s can be added at the start of an integer. gRPC’s hpack parser needed to read all of them before concluding a parse. - gRPC’s metadata overflow check was performed per frame, so ...