QID 357087

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) text nodes not in the html namespace are incorrectly literally rendered, causing text which should be escaped to not be.
This could lead to an xss attack. (
( CVE-2023-3978) opentelemetry-go contrib is a collection of third-party packages for opentelemetry-go.
A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality.
It leads to the servers potential memory exhaustion when many malicious requests are sent to it.
Http header user-agent or http method for requests can be easily set by an attacker to be random and long.
The library internally uses `httpconv.
Serverrequest` that records every value for http `method` and `user-agent`.
In order to be affected, a program has to use the `otelhttp.
Newhandler` wrapper and not filter any unknown http methods or user agents on the level of cdn, lb, previous middleware, etc.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.