CVE-2017-1000100
Summary
| CVE | CVE-2017-1000100 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-10-05 01:29:04 UTC |
| Updated | 2026-04-16 14:16:10 UTC |
| Description | When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPT_REDIR_PROTOCOLS. |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS: 0.008180000 probability, percentile 0.743920000 (date 2026-04-21)
Problem Types: CWE-200 | n/a | CWE-200 CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| 3.0 | [email protected] | Primary | 6.5 | MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| 2.0 | [email protected] | Primary | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:N/AC:M/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Haxx | Libcurl | 7.15.0 | All | All | All |
| Application | Haxx | Libcurl | 7.15.1 | All | All | All |
| Application | Haxx | Libcurl | 7.15.2 | All | All | All |
| Application | Haxx | Libcurl | 7.15.3 | All | All | All |
| Application | Haxx | Libcurl | 7.15.4 | All | All | All |
| Application | Haxx | Libcurl | 7.15.5 | All | All | All |
| Application | Haxx | Libcurl | 7.16.0 | All | All | All |
| Application | Haxx | Libcurl | 7.16.1 | All | All | All |
| Application | Haxx | Libcurl | 7.16.2 | All | All | All |
| Application | Haxx | Libcurl | 7.16.3 | All | All | All |
| Application | Haxx | Libcurl | 7.16.4 | All | All | All |
| Application | Haxx | Libcurl | 7.17.0 | All | All | All |
| Application | Haxx | Libcurl | 7.17.1 | All | All | All |
| Application | Haxx | Libcurl | 7.18.0 | All | All | All |
| Application | Haxx | Libcurl | 7.18.1 | All | All | All |
| Application | Haxx | Libcurl | 7.18.2 | All | All | All |
| Application | Haxx | Libcurl | 7.19.0 | All | All | All |
| Application | Haxx | Libcurl | 7.19.1 | All | All | All |
| Application | Haxx | Libcurl | 7.19.2 | All | All | All |
| Application | Haxx | Libcurl | 7.19.3 | All | All | All |
| Application | Haxx | Libcurl | 7.19.4 | All | All | All |
| Application | Haxx | Libcurl | 7.19.5 | All | All | All |
| Application | Haxx | Libcurl | 7.19.6 | All | All | All |
| Application | Haxx | Libcurl | 7.19.7 | All | All | All |
| Application | Haxx | Libcurl | 7.20.0 | All | All | All |
| Application | Haxx | Libcurl | 7.20.1 | All | All | All |
| Application | Haxx | Libcurl | 7.21.0 | All | All | All |
| Application | Haxx | Libcurl | 7.21.1 | All | All | All |
| Application | Haxx | Libcurl | 7.21.2 | All | All | All |
| Application | Haxx | Libcurl | 7.21.3 | All | All | All |
| Application | Haxx | Libcurl | 7.21.4 | All | All | All |
| Application | Haxx | Libcurl | 7.21.5 | All | All | All |
| Application | Haxx | Libcurl | 7.21.6 | All | All | All |
| Application | Haxx | Libcurl | 7.21.7 | All | All | All |
| Application | Haxx | Libcurl | 7.22.0 | All | All | All |
| Application | Haxx | Libcurl | 7.23.0 | All | All | All |
| Application | Haxx | Libcurl | 7.23.1 | All | All | All |
| Application | Haxx | Libcurl | 7.24.0 | All | All | All |
| Application | Haxx | Libcurl | 7.25.0 | All | All | All |
| Application | Haxx | Libcurl | 7.26.0 | All | All | All |
| Application | Haxx | Libcurl | 7.27.0 | All | All | All |
| Application | Haxx | Libcurl | 7.28.0 | All | All | All |
| Application | Haxx | Libcurl | 7.28.1 | All | All | All |
| Application | Haxx | Libcurl | 7.29.0 | All | All | All |
| Application | Haxx | Libcurl | 7.30.0 | All | All | All |
| Application | Haxx | Libcurl | 7.31.0 | All | All | All |
| Application | Haxx | Libcurl | 7.32.0 | All | All | All |
| Application | Haxx | Libcurl | 7.33.0 | All | All | All |
| Application | Haxx | Libcurl | 7.34.0 | All | All | All |
| Application | Haxx | Libcurl | 7.35.0 | All | All | All |
| Application | Haxx | Libcurl | 7.36.0 | All | All | All |
| Application | Haxx | Libcurl | 7.37.0 | All | All | All |
| Application | Haxx | Libcurl | 7.37.1 | All | All | All |
| Application | Haxx | Libcurl | 7.38.0 | All | All | All |
| Application | Haxx | Libcurl | 7.39 | All | All | All |
| Application | Haxx | Libcurl | 7.40.0 | All | All | All |
| Application | Haxx | Libcurl | 7.41.0 | All | All | All |
| Application | Haxx | Libcurl | 7.42.0 | All | All | All |
| Application | Haxx | Libcurl | 7.42.1 | All | All | All |
| Application | Haxx | Libcurl | 7.43.0 | All | All | All |
| Application | Haxx | Libcurl | 7.44.0 | All | All | All |
| Application | Haxx | Libcurl | 7.45.0 | All | All | All |
| Application | Haxx | Libcurl | 7.46.0 | All | All | All |
| Application | Haxx | Libcurl | 7.47.0 | All | All | All |
| Application | Haxx | Libcurl | 7.47.1 | All | All | All |
| Application | Haxx | Libcurl | 7.48.0 | All | All | All |
| Application | Haxx | Libcurl | 7.49.0 | All | All | All |
| Application | Haxx | Libcurl | 7.49.1 | All | All | All |
| Application | Haxx | Libcurl | 7.50.0 | All | All | All |
| Application | Haxx | Libcurl | 7.50.1 | All | All | All |
| Application | Haxx | Libcurl | 7.50.2 | All | All | All |
| Application | Haxx | Libcurl | 7.50.3 | All | All | All |
| Application | Haxx | Libcurl | 7.51.0 | All | All | All |
| Application | Haxx | Libcurl | 7.52.0 | All | All | All |
| Application | Haxx | Libcurl | 7.52.1 | All | All | All |
| Application | Haxx | Libcurl | 7.53.0 | All | All | All |
| Application | Haxx | Libcurl | 7.53.1 | All | All | All |
| Application | Haxx | Libcurl | 7.54.0 | All | All | All |
| Application | Haxx | Libcurl | 7.54.1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Debian -- Security Information -- DSA-3992-1 curl | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| curl - TFTP sends more than buffer size | af854a3a-2127-422b-91ae-364da2661108 | curl.haxx.se | Patch, Vendor Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| Malformed Request | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| cURL: Multiple vulnerabilities (GLSA 201709-14) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Patch, Third Party Advisory, VDB Entry |
| About the security content of macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan - Apple Support | af854a3a-2127-422b-91ae-364da2661108 | support.apple.com | |
| cURL TFTP URL Processing Bug Lets Remote Users Obtain Potentially Sensitive Information on the Target System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.