Medium: golist

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)

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request’s headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection. (CVE-2023-45288)

Affected Packages:

golist

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 golist to update your system.

New Packages:

aarch64:  
    golist-0.10.1-10.amzn2.0.5.aarch64  
    golist-debuginfo-0.10.1-10.amzn2.0.5.aarch64  
  
src:  
    golist-0.10.1-10.amzn2.0.5.src  
  
x86_64:  
    golist-0.10.1-10.amzn2.0.5.x86_64  
    golist-debuginfo-0.10.1-10.amzn2.0.5.x86_64  

Additional References

Red Hat: CVE-2023-39326, CVE-2023-45288

Mitre: CVE-2023-39326, CVE-2023-45288