The version of amazon-ssm-agent installed on the remote host is prior to 3.2.2222.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2024-2458 advisory.

  - A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive     server resource consumption. While the total number of requests is bounded by the     http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create     a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound     the number of simultaneously executing handler goroutines to the stream concurrency limit     (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client     has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows     too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2     for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per     HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the     Server.MaxConcurrentStreams setting and the ConfigureServer function. (CVE-2023-39325)

  - A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response     body to read many more bytes from the network than are in the body. A malicious HTTP client can further     exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a     handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which     permit including additional metadata in a request or response body sent using the chunked encoding. The     net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large     metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real     body to encoded bytes grows too small. (CVE-2023-39326)

  - A denial of service (DoS) vulnerability was discovered in go-git versions prior to v5.11. This     vulnerability allows an attacker to perform denial of service attacks by providing specially crafted     responses from a Git server which triggers resource exhaustion in go-git clients. Applications using only     the in-memory filesystem supported by go-git are not affected by this vulnerability. This is a go-git     implementation issue and does not affect the upstream git cli. (CVE-2023-49568)

  - A path traversal vulnerability was discovered in go-git versions prior to v5.11. This vulnerability allows     an attacker to create and amend files across the filesystem. In the worse case scenario, remote code     execution could be achieved. Applications are only affected if they are using the ChrootOS     https://pkg.go.dev/github.com/go-git/go-billy/v5/osfs#ChrootOS , which is the default when using Plain     versions of Open and Clone funcs (e.g. PlainClone). Applications using BoundOS     https://pkg.go.dev/github.com/go-git/go-billy/v5/osfs#BoundOS or in-memory filesystems are not affected by     this issue. This is a go-git implementation issue and does not affect the upstream git cli.
    (CVE-2023-49569)

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

Detections

Analytics

Amazon Linux 2 : amazon-ssm-agent (ALAS-2024-2458)

critical Nessus Plugin ID 190697

Version 1.2

Version 1.1

Version 1.2 Apr 25, 2024, 8:13 AM CVE (set "CVE" coverage to "CVE-2023-39325,CVE-2023-39326,CVE-2023-49568,CVE-2023-49569") Plugin metadata Plugin Feed: 202404250813
Version 1.1 Mar 5, 2024, 7:01 AM CVE (set "CVE" coverage to "CVE-2023-39325,CVE-2023-39326,CVE-2023-49569") Plugin metadata Plugin Feed: 202403050701