ALAS-2024-2543


Amazon Linux 2 Security Advisory: ALAS-2024-2543
Advisory Release Date: 2024-05-09 19:16 Pacific
Advisory Updated Date: 2024-05-15 19:24 Pacific
Severity: Medium

Issue Overview:

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)


Affected Packages:

cni-plugins


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update cni-plugins to update your system.

New Packages:
aarch64:
    cni-plugins-1.2.0-1.amzn2.0.5.aarch64
    cni-plugins-debuginfo-1.2.0-1.amzn2.0.5.aarch64

src:
    cni-plugins-1.2.0-1.amzn2.0.5.src

x86_64:
    cni-plugins-1.2.0-1.amzn2.0.5.x86_64
    cni-plugins-debuginfo-1.2.0-1.amzn2.0.5.x86_64