CVE-2023-39326 Affecting istio-istioctl package, versions <0:1.16.7-3.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.09% (41st percentile)

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  • Snyk IDSNYK-ORACLE7-ISTIOISTIOCTL-6354488
  • published2 Mar 2024
  • disclosed6 Dec 2023

Introduced: 6 Dec 2023

CVE-2023-39326  (opens in a new tab)

How to fix?

Upgrade Oracle:7 istio-istioctl to version 0:1.16.7-3.el7 or higher.
This issue was patched in ELSA-2024-12189.

NVD Description

Note: Versions mentioned in the description apply only to the upstream istio-istioctl package and not the istio-istioctl package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1