CURL-CVE-2022-32206

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Source
https://curl.se/docs/CVE-2022-32206.html
Import Source
https://curl.se/docs/CURL-CVE-2022-32206.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2022-32206
Aliases
Published
2022-06-27T08:00:00Z
Modified
2025-05-15T17:48:29Z
Summary
HTTP compression denial of service
Details

curl supports "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.

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.

Database specific 
{
    "URL": "https://curl.se/docs/CVE-2022-32206.json",
    "last_affected": "7.83.1",
    "severity": "Medium",
    "issue": "https://hackerone.com/reports/1570651",
    "affects": "both",
    "package": "curl",
    "www": "https://curl.se/docs/CVE-2022-32206.html",
    "CWE": {
        "id": "CWE-770",
        "desc": "Allocation of Resources Without Limits or Throttling"
    },
    "award": {
        "currency": "USD",
        "amount": "2400"
    }
}
References
Credits
    • Harry Sintonen - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.57.0
Fixed
7.84.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
dbcced8e32b50c068ac297106f0502ee200a1ebd
Fixed
3a09fbb7f264c67c438d01a30669ce325aa508e2

Affected versions

7.*

7.57.0
7.58.0
7.59.0
7.60.0
7.61.0
7.61.1
7.62.0
7.63.0
7.64.0
7.64.1
7.65.0
7.65.1
7.65.2
7.65.3
7.66.0
7.67.0
7.68.0
7.69.0
7.69.1
7.70.0
7.71.0
7.71.1
7.72.0
7.73.0
7.74.0
7.75.0
7.76.0
7.76.1
7.77.0
7.78.0
7.79.0
7.79.1
7.80.0
7.81.0
7.82.0
7.83.0
7.83.1

Database specific

vanir_signatures

[
    {
        "source": "https://github.com/curl/curl.git/commit/3a09fbb7f264c67c438d01a30669ce325aa508e2",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "lib/content_encoding.c"
        },
        "id": "CURL-CVE-2022-32206-2afb59a3",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "45157733837481580733201877978631346553",
                "289994305010963280595464022725692321783",
                "285418258574578001939871387444273795700",
                "36972230101229254421458880172651761630",
                "258485294902386500308213611257281103675",
                "223508019877366983451146801494110424292",
                "111336570175832252860899159343638748825",
                "306740132958412367269024066267076989494",
                "249434907631169292432704525991203976794",
                "24000321900336010795433163882969240477"
            ]
        }
    },
    {
        "source": "https://github.com/curl/curl.git/commit/3a09fbb7f264c67c438d01a30669ce325aa508e2",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "Curl_build_unencoding_stack",
            "file": "lib/content_encoding.c"
        },
        "id": "CURL-CVE-2022-32206-c8d05009",
        "signature_type": "Function",
        "digest": {
            "length": 874.0,
            "function_hash": "135163556199857411550722417587621050098"
        }
    }
]