CURL-CVE-2018-16890

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Source
https://curl.se/docs/CVE-2018-16890.html
Import Source
https://curl.se/docs/CURL-CVE-2018-16890.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2018-16890
Aliases
Published
2019-02-06T08:00:00Z
Modified
2024-01-25T02:42:48.554424Z
Summary
NTLM type-2 out-of-bounds buffer read
Details

libcurl contains a heap buffer out-of-bounds read flaw.

The function handling incoming NTLM type-2 messages (lib/vauth/ntlm.c:ntlm_decode_type2_target) does not validate incoming data correctly and is subject to an integer overflow vulnerability.

Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.

Database specific 
{
    "package": "curl",
    "CWE": {
        "id": "CWE-125",
        "desc": "Out-of-bounds Read"
    },
    "last_affected": "7.63.0",
    "severity": "Medium",
    "affects": "both",
    "URL": "https://curl.se/docs/CVE-2018-16890.json",
    "www": "https://curl.se/docs/CVE-2018-16890.html"
}
References
Credits
    • Wenxiang Qian of Tencent Blade Team - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.36.0
Fixed
7.64.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
86724581b6c02d160b52f817550cfdfc9c93af62
Fixed
b780b30d1377adb10bbe774835f49e9b237fb9bb

Affected versions

7.*

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
7.60.0
7.61.0
7.61.1
7.62.0
7.63.0

Database specific

vanir_signatures

[
    {
        "signature_version": "v1",
        "deprecated": false,
        "id": "CURL-CVE-2018-16890-10e9b890",
        "target": {
            "file": "lib/vauth/ntlm.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "12728682252783882915865415916745410219",
                "260038441391679011891052480260443053264",
                "304498700439191242831503511784071893196",
                "248163854096766719562619899192948860617",
                "258592839919068071494480859323354185920",
                "65831133836082554303220208869811168717",
                "5459699787853170582943844525295317240",
                "40134995311612953874905870103359729622"
            ]
        },
        "source": "https://github.com/curl/curl.git/commit/b780b30d1377adb10bbe774835f49e9b237fb9bb"
    },
    {
        "signature_version": "v1",
        "deprecated": false,
        "id": "CURL-CVE-2018-16890-a78e5ad3",
        "target": {
            "function": "ntlm_decode_type2_target",
            "file": "lib/vauth/ntlm.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 767.0,
            "function_hash": "167555698249115182477771298620459297773"
        },
        "source": "https://github.com/curl/curl.git/commit/b780b30d1377adb10bbe774835f49e9b237fb9bb"
    }
]