CVE-2023-23916

2023-02-2300:00:00

CWE-770

hackerone

www.cve.org

curl

vulnerability

resource allocation

7.7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

43.9%

JSON

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "https://github.com/curl/curl",
    "versions": [
      {
        "version": "Fixed in 7.88.0",
        "status": "affected"
      }
    ]
  }
]