CURL-CVE-2019-5435

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Source
https://curl.se/docs/CVE-2019-5435.html
Import Source
https://curl.se/docs/CURL-CVE-2019-5435.json
JSON Data
https://api.test.osv.dev/v1/vulns/CURL-CVE-2019-5435
Aliases
Published
2019-05-22T08:00:00Z
Modified
2025-11-12T00:50:45Z
Summary
Integer overflows in URL parser
Details

libcurl contains two integer overflows in the curl_url_set() function that if triggered, can lead to a too small buffer allocation and a subsequent heap buffer overflow.

The flaws only exist on 32-bit architectures and require excessive string input lengths.

Database specific 
{
    "package": "curl",
    "last_affected": "7.64.1",
    "affects": "both",
    "URL": "https://curl.se/docs/CVE-2019-5435.json",
    "issue": "https://hackerone.com/reports/547630",
    "www": "https://curl.se/docs/CVE-2019-5435.html",
    "CWE": {
        "desc": "Incorrect Calculation of Buffer Size",
        "id": "CWE-131"
    },
    "severity": "Low",
    "award": {
        "currency": "USD",
        "amount": "150"
    }
}
References
Credits
    • Wenchao Li - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.62.0
Fixed
7.65.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
fb30ac5a2d63773c529c19259754e2b306ac2e2e
Fixed
5fc28510a4664f46459d9a40187d81cc08571e60

Affected versions

7.*

7.62.0
7.63.0
7.64.0
7.64.1

Database specific

vanir_signatures

[
    {
        "digest": {
            "length": 4035.0,
            "function_hash": "17111116627931576603258458591224325768"
        },
        "target": {
            "file": "lib/urlapi.c",
            "function": "seturl"
        },
        "signature_type": "Function",
        "id": "CURL-CVE-2019-5435-3d01b602",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/curl/curl.git/commit/5fc28510a4664f46459d9a40187d81cc08571e60"
    },
    {
        "digest": {
            "length": 211.0,
            "function_hash": "280153927549616949673385639853676244803"
        },
        "target": {
            "file": "lib/setopt.c",
            "function": "Curl_setstropt"
        },
        "signature_type": "Function",
        "id": "CURL-CVE-2019-5435-5f8b7610",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/curl/curl.git/commit/5fc28510a4664f46459d9a40187d81cc08571e60"
    },
    {
        "digest": {
            "line_hashes": [
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                "262309584276055853606192772635916031948",
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                "195759364791479024806308952934440236640",
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            ],
            "threshold": 0.9
        },
        "target": {
            "file": "lib/urlapi.c"
        },
        "signature_type": "Line",
        "id": "CURL-CVE-2019-5435-8089b0e0",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/curl/curl.git/commit/5fc28510a4664f46459d9a40187d81cc08571e60"
    },
    {
        "digest": {
            "length": 4780.0,
            "function_hash": "205059320973945546455665219084683290377"
        },
        "target": {
            "file": "lib/urlapi.c",
            "function": "curl_url_set"
        },
        "signature_type": "Function",
        "id": "CURL-CVE-2019-5435-84d699b1",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/curl/curl.git/commit/5fc28510a4664f46459d9a40187d81cc08571e60"
    },
    {
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "target": {
            "file": "lib/setopt.c"
        },
        "signature_type": "Line",
        "id": "CURL-CVE-2019-5435-ce5daf70",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://github.com/curl/curl.git/commit/5fc28510a4664f46459d9a40187d81cc08571e60"
    }
]