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CVE-2023-39326 Affecting conmon package, versions <3:2.1.10-1.module+el8.10.0+90298+77a9814d

Severity

 Recommended
0.0
medium
0
10

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.05% (21st percentile)

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  • Snyk ID SNYK-ORACLE8-CONMON-6370924
  • published 5 Mar 2024
  • disclosed 6 Dec 2023
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Introduced: 6 Dec 2023

CVE-2023-39326 Open this link in a new tab

How to fix?

Upgrade Oracle:8 conmon to version 3:2.1.10-1.module+el8.10.0+90298+77a9814d or higher.
This issue was patched in ELSA-2024-2988.

NVD Description

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

5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

5.3 medium
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SUSE

7.5 high