CURL-CVE-2018-1000301

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Source
https://curl.se/docs/CVE-2018-1000301.html
Import Source
https://curl.se/docs/CURL-CVE-2018-1000301.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2018-1000301
Aliases
Published
2018-05-16T08:00:00Z
Modified
2026-05-27T02:29:21.712243Z
Summary
RTSP bad headers buffer over-read
Details

curl can be tricked into reading data beyond the end of a heap based buffer used to store downloaded content.

When servers send RTSP responses back to curl, the data starts out with a set of headers. curl parses that data to separate it into a number of headers to deal with those appropriately and to find the end of the headers that signal the start of the "body" part.

The function that splits up the response into headers is called Curl_http_readwrite_headers() and in situations where it cannot find a single header in the buffer, it might end up leaving a pointer pointing into the buffer instead of to the start of the buffer which then later on may lead to an out of buffer read when code assumes that pointer points to a full buffer size worth of memory to use.

This could potentially lead to information leakage but most likely a crash/denial of service for applications if a server triggers this flaw.

Database specific 
{
    "severity": "Medium",
    "www": "https://curl.se/docs/CVE-2018-1000301.html",
    "CWE": {
        "id": "CWE-126",
        "desc": "Buffer Over-read"
    },
    "URL": "https://curl.se/docs/CVE-2018-1000301.json",
    "affects": "both",
    "package": "curl",
    "last_affected": "7.59.0"
}
References
Credits
    • OSS-Fuzz - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER
    • Max Dymond - OTHER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.20.0
Fixed
7.60.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
bc4582b68a673d3b0f5a2e7d971605de2c8b3730
Fixed
8c7b3737d29ed5c0575bf592063de8a51450812d

Affected versions

7.*
7.20.0
7.20.1
7.21.0
7.21.1
7.21.2
7.21.3
7.21.4
7.21.5
7.21.6
7.21.7
7.22.0
7.23.0
7.23.1
7.24.0
7.25.0
7.26.0
7.27.0
7.28.0
7.28.1
7.29.0
7.30.0
7.31.0
7.32.0
7.33.0
7.34.0
7.35.0
7.36.0
7.37.0
7.37.1
7.38.0
7.39.0
7.40.0
7.41.0
7.42.0
7.42.1
7.43.0
7.44.0
7.45.0
7.46.0
7.47.0
7.47.1
7.48.0
7.49.0
7.49.1
7.50.0
7.50.1
7.50.2
7.50.3
7.51.0
7.52.0
7.52.1
7.53.0
7.53.1
7.54.0
7.54.1
7.55.0
7.55.1
7.56.0
7.56.1
7.57.0
7.58.0
7.59.0
Other
curl-7_20_0
curl-7_20_1
curl-7_21_0
curl-7_21_1
curl-7_21_2
curl-7_21_3
curl-7_21_4
curl-7_21_5
curl-7_21_6
curl-7_21_7
curl-7_22_0
curl-7_23_0
curl-7_23_1
curl-7_24_0
curl-7_25_0
curl-7_26_0
curl-7_27_0
curl-7_28_0
curl-7_28_1
curl-7_29_0
curl-7_30_0
curl-7_31_0
curl-7_32_0
curl-7_33_0
curl-7_34_0
curl-7_35_0
curl-7_36_0
curl-7_37_0
curl-7_37_1
curl-7_38_0
curl-7_39_0
curl-7_40_0
curl-7_41_0
curl-7_42_0
curl-7_42_1
curl-7_43_0
curl-7_44_0
curl-7_45_0
curl-7_46_0
curl-7_47_0
curl-7_47_1
curl-7_48_0
curl-7_49_0
curl-7_49_1
curl-7_50_0
curl-7_50_1
curl-7_50_2
curl-7_50_3
curl-7_51_0
curl-7_52_0
curl-7_52_1
curl-7_53_0
curl-7_53_1
curl-7_54_0
curl-7_54_1
curl-7_55_0
curl-7_55_1
curl-7_56_0
curl-7_56_1
curl-7_57_0
curl-7_58_0
curl-7_59_0

Database specific

source 
"https://curl.se/docs/CURL-CVE-2018-1000301.json"
vanir_signatures_modified 
"2026-05-27T02:29:21Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/curl/curl.git/commit/8c7b3737d29ed5c0575bf592063de8a51450812d",
        "digest": {
            "function_hash": "37860886073078372341497195057354531055",
            "length": 13923.0
        },
        "id": "CURL-CVE-2018-1000301-21826962",
        "deprecated": false,
        "target": {
            "file": "lib/http.c",
            "function": "Curl_http_readwrite_headers"
        }
    },
    {
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/curl/curl.git/commit/8c7b3737d29ed5c0575bf592063de8a51450812d",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "60540376985795332104885178944460297627",
                "32121863850034651570678934636920241612",
                "210976118834394436936769943085360174365",
                "12613360968588433500604004387603295497",
                "233511850012068601660191913109716389610",
                "310310701518340729159613488610066335964",
                "163153379115803148264174895663674330793",
                "236333589854267053654038544780176612755"
            ]
        },
        "id": "CURL-CVE-2018-1000301-f45502dd",
        "deprecated": false,
        "target": {
            "file": "lib/http.c"
        }
    }
]