Resource Exhaustion Affecting conmon package, versions <3:2.1.10-1.module+el8.10.0+21077+98b84d8a


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-CENTOS8-CONMON-6104359
  • published7 Dec 2023
  • disclosed6 Dec 2023

Introduced: 6 Dec 2023

CVE-2023-39326  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Centos:8 conmon to version 3:2.1.10-1.module+el8.10.0+21077+98b84d8a or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream conmon package and not the conmon package as distributed by Centos. See How to fix? for Centos:8 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