Allocation of Resources Without Limits or Throttling Affecting curl package, versions <7.79.1-r5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.23% (61st percentile)

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  • Snyk IDSNYK-ALPINE314-CURL-3320729
  • published15 Feb 2023
  • disclosed23 Feb 2023

Introduced: 15 Feb 2023

CVE-2023-23916  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Alpine:3.14 curl to version 7.79.1-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine. See How to fix? for Alpine:3.14 relevant fixed versions and status.

An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.

CVSS Scores

version 3.1