The version of ecs-service-connect-agent installed on the remote host is prior to v1.26.4.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2ECS-2023-006 advisory.

    Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with     permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC     payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's     domain configuration. (CVE-2023-35941)

    Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause     a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and     1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
    (CVE-2023-35942)

    Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions     1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the     `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the     `origin` header in the Envoy configuration. (CVE-2023-35943)

    Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-     case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0,     1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes     such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections.
    With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme     values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive.
    There are no known workarounds for this issue. (CVE-2023-35944)

    Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy's HTTP/2 codec may leak a header     map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames     from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame     skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code     path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The     clean-up code is right after the return statement, causing memory leak. Denial of service through memory     exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.
    (CVE-2023-35945)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

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Amazon Linux 2 : ecs-service-connect-agent (ALASECS-2023-006)

critical Nessus Plugin ID 180563

Version 1.2

Version 1.1

Version 1.2 Dec 12, 2024, 9:55 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202412120955
Version 1.1 Sep 7, 2023, 2:20 PM Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202309071420