Low
Security advisory
A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-8284
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:37 UTC · Revision 1
Source evidence
A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
osv:CVE-2020-8284
Complete source record
{
"id": "05124adf8985d96aa88ff6b3db78a31a869b179cae3e56e2aaf77c481f0ed760",
"url": "https://osv.dev/vulnerability/CVE-2020-8284",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-8284",
"summary": "A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.",
"evidence": "osv:CVE-2020-8284",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2020-8284",
"aliases": [
"CURL-CVE-2020-8284",
"CVE-2020-8284"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/curl/curl",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "315ee3fe75dade912b48a21ceec9ccda0230d937"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "7.73.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"curl-7_73_0",
"curl-7_72_0",
"curl-7_71_1",
"curl-7_71_0",
"curl-7_70_0",
"curl-7_69_1",
"curl-7_69_0",
"curl-7_68_0",
"curl-7_67_0",
"curl-7_66_0",
"curl-7_65_3",
"curl-7_65_2",
"curl-7_65_1",
"curl-7_65_0",
"curl-7_64_1",
"curl-7_64_0",
"curl-7_63_0",
"curl-7_62_0",
"curl-7_61_1",
"curl-7_61_0",
"curl-7_60_0",
"curl-7_59_0",
"curl-7_58_0",
"curl-7_57_0",
"curl-7_56_1",
"curl-7_56_0",
"curl-7_55_1",
"curl-7_55_0",
"curl-7_54_1",
"curl-7_54_0",
"curl-7_53_1",
"curl-7_53_0",
"curl-7_52_1",
"curl-7_52_0",
"curl-7_51_0",
"curl-7_50_3",
"curl-7_50_2",
"curl-7_50_1",
"curl-7_50_0",
"curl-7_49_1",
"curl-7_49_0",
"curl-7_48_0",
"curl-7_47_1",
"curl-7_47_0",
"curl-7_46_0",
"curl-7_45_0",
"curl-7_44_0",
"curl-7_43_0",
"curl-7_42_0",
"curl-7_41_0",
"curl-7_40_0",
"curl-7_39_0",
"curl-7_38_0",
"curl-7_37_1",
"curl-7_37_0",
"curl-7_36_0",
"curl-7_35_0",
"curl-7_34_0",
"curl-7_33_0",
"curl-7_32_0",
"curl-7_31_0",
"curl-7_30_0",
"curl-7_29_0",
"curl-7_28_1",
"curl-7_28_0",
"curl-7_27_0",
"curl-7_26_0",
"curl-7_25_0",
"curl-7_23_1",
"curl-7_23_0",
"curl-7_22_0",
"curl-7_21_7",
"curl-7_21_6",
"curl-7_21_5",
"curl-7_21_4",
"curl-7_21_3",
"curl-7_21_2",
"curl-7_21_1",
"curl-7_21_0",
"curl-7_20_1",
"curl-7_20_0",
"curl-7_19_7",
"curl-7_19_6",
"curl-7_19_5",
"curl-7_19_4",
"curl-7_19_3",
"curl-7_19_2",
"curl-7_19_1",
"curl-7_19_0",
"curl-7_18_2",
"curl-7_18_1",
"curl-7_18_0",
"curl-7_17_1",
"curl-7_17_0",
"curl-7_17_0-preldapfix",
"curl-7_16_4",
"curl-7_16_3",
"curl-7_16_2",
"curl-7_16_1",
"curl-7_16_0",
"curl-7_15_6-prepipeline",
"curl-7_15_5",
"curl-7_15_4",
"curl-7_15_3",
"curl-7_15_2",
"curl-7_15_1",
"curl-7_15_0",
"curl-7_14_1",
"curl-7_14_0",
"curl-7_13_2",
"curl-7_13_1",
"before_ftp_statemachine",
"curl-7_13_0",
"curl-7_12_3",
"curl-7_12_2",
"curl-7_12_1",
"curl-7_12_0",
"curl-7_11_2",
"curl-7_11_1",
"curl-7_11_0",
"curl-7_10_8",
"curl-7_10_7",
"curl-7_10_6",
"curl-7_10_5",
"curl-7_10_4",
"curl-7_10_3",
"curl-7_10_2",
"curl-7_10_1",
"curl-7_10",
"curl-7_9_8",
"curl-7_9_7",
"curl-7_9_7-pre2",
"curl-7_9_6",
"curl-7_9_5",
"curl-7_9_5-pre4",
"curl-7_9_5-pre2",
"curl-7_9_4",
"curl-7_9_3",
"curl-7_9_3-pre3",
"curl-7_9_3-pre2",
"curl-7_9_3-pre1",
"curl-7_9_2",
"curl-7_9_1",
"curl-7_9",
"before_urldata_rename",
"curl-7_8_1",
"curl-7_8_1-pre3",
"curl-7_8",
"curl-7_8-pre2",
"curl-7_7_3",
"curl-7_7_2",
"curl-7_7_1",
"curl-7_7",
"curl-7_7-beta5",
"curl-7_7-beta3",
"curl-7_7-beta2",
"curl-7_7-beta1",
"curl-7_7_alpha2",
"curl-7_6_1",
"curl-7_6_1-pre3",
"curl-7_6_1-pre2",
"curl-7_6_1-pre1",
"curl-7_6",
"curl-7_6-pre4",
"curl_7_6-pre3",
"curl-7_5_2",
"curl-7_5",
"curl-7_4_1",
"curl-7_3",
"curl-7_2",
"curl-7_1_1",
"curl-6_5_2",
"curl-6_5_1",
"curl-6_5"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8284.json"
}
}
],
"modified": "2026-10-24T10:30:55.896152566Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-389290.html",
"https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
"https://curl.se/docs/CVE-2020-8284.html",
"https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG/",
"https://security.gentoo.org/glsa/202012-14",
"https://security.netapp.com/advisory/ntap-20210122-0007/",
"https://support.apple.com/kb/HT212325",
"https://support.apple.com/kb/HT212326",
"https://support.apple.com/kb/HT212327",
"https://www.debian.org/security/2021/dsa-4881",
"https://hackerone.com/reports/1040166",
"https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"https://www.oracle.com//security-alerts/cpujul2021.html",
"https://www.oracle.com/security-alerts/cpuApr2021.html",
"https://www.oracle.com/security-alerts/cpuapr2022.html",
"https://www.oracle.com/security-alerts/cpujan2022.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:mac_os_x",
"extracted_events": [
{
"range": [
{
"introduced": "10.14.0"
},
{
"fixed": "10.14.6"
},
{
"introduced": "10.15"
},
{
"fixed": "10.15.7"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-1_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-4_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-4s_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-1_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-2_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-2s_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2410"
},
{
"fixed": "xcp3110"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*"
],
"vendor_product": "siemens:sinec_infrastructure_network_services",
"extracted_events": [
{
"range": [
{
"fixed": "1.0.1.1"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*"
],
"vendor_product": "splunk:universal_forwarder",
"extracted_events": [
{
"range": [
{
"introduced": "8.2.0"
},
{
"fixed": "8.2.12"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.6"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*",
"cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*"
],
"vendor_product": "apple:mac_os_x",
"extracted_events": [
{
"range": [
{
"introduced": "10.14.6-security_update_2019\\-001"
},
{
"last_affected": "10.14.6-security_update_2019\\-001"
},
{
"introduced": "10.14.6-security_update_2019\\-002"
},
{
"last_affected": "10.14.6-security_update_2019\\-002"
},
{
"introduced": "10.14.6-security_update_2019\\-004"
},
{
"last_affected": "10.14.6-security_update_2019\\-004"
},
{
"introduced": "10.14.6-security_update_2019\\-005"
},
{
"last_affected": "10.14.6-security_update_2019\\-005"
},
{
"introduced": "10.14.6-security_update_2019\\-006"
},
{
"last_affected": "10.14.6-security_update_2019\\-006"
},
{
"introduced": "10.14.6-security_update_2019\\-007"
},
{
"last_affected": "10.14.6-security_update_2019\\-007"
},
{
"introduced": "10.14.6-security_update_2020\\-001"
},
{
"last_affected": "10.14.6-security_update_2020\\-001"
},
{
"introduced": "10.14.6-security_update_2020\\-002"
},
{
"last_affected": "10.14.6-security_update_2020\\-002"
},
{
"introduced": "10.14.6-security_update_2020\\-003"
},
{
"last_affected": "10.14.6-security_update_2020\\-003"
},
{
"introduced": "10.14.6-security_update_2020\\-004"
},
{
"last_affected": "10.14.6-security_update_2020\\-004"
},
{
"introduced": "10.14.6-security_update_2020\\-005"
},
{
"last_affected": "10.14.6-security_update_2020\\-005"
},
{
"introduced": "10.14.6-security_update_2020\\-006"
},
{
"last_affected": "10.14.6-security_update_2020\\-006"
},
{
"introduced": "10.14.6-security_update_2020\\-007"
},
{
"last_affected": "10.14.6-security_update_2020\\-007"
},
{
"introduced": "10.14.6-security_update_2021\\-001"
},
{
"last_affected": "10.14.6-security_update_2021\\-001"
},
{
"introduced": "10.14.6-security_update_2021\\-002"
},
{
"last_affected": "10.14.6-security_update_2021\\-002"
},
{
"introduced": "10.14.6-supplemental_update"
},
{
"last_affected": "10.14.6-supplemental_update"
},
{
"introduced": "10.14.6-supplemental_update_2"
},
{
"last_affected": "10.14.6-supplemental_update_2"
},
{
"introduced": "10.15.7-NA"
},
{
"last_affected": "10.15.7-NA"
},
{
"introduced": "10.15.7-security_update_2020"
},
{
"last_affected": "10.15.7-security_update_2020"
},
{
"introduced": "10.15.7-security_update_2020\\-001"
},
{
"last_affected": "10.15.7-security_update_2020\\-001"
},
{
"introduced": "10.15.7-security_update_2020\\-005"
},
{
"last_affected": "10.15.7-security_update_2020\\-005"
},
{
"introduced": "10.15.7-security_update_2020\\-007"
},
{
"last_affected": "10.15.7-security_update_2020\\-007"
},
{
"introduced": "10.15.7-security_update_2021\\-001"
},
{
"last_affected": "10.15.7-security_update_2021\\-001"
},
{
"introduced": "10.15.7-supplemental_update"
},
{
"last_affected": "10.15.7-supplemental_update"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:apple:macos:11.0.1:*:*:*:*:*:*:*",
"cpe:2.3:o:apple:macos:11.1:*:*:*:*:*:*:*",
"cpe:2.3:o:apple:macos:11.2:*:*:*:*:*:*:*"
],
"vendor_product": "apple:macos",
"extracted_events": [
{
"range": [
{
"introduced": "11.0.1"
},
{
"last_affected": "11.0.1"
},
{
"introduced": "11.1"
},
{
"last_affected": "11.1"
},
{
"introduced": "11.2"
},
{
"last_affected": "11.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
},
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:communications_billing_and_revenue_management",
"extracted_events": [
{
"range": [
{
"introduced": "12.0.0.3.0"
},
{
"last_affected": "12.0.0.3.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:communications_cloud_native_core_policy",
"extracted_events": [
{
"range": [
{
"introduced": "1.14.0"
},
{
"last_affected": "1.14.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:essbase",
"extracted_events": [
{
"range": [
{
"introduced": "21.2"
},
{
"last_affected": "21.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:peoplesoft_enterprise_peopletools",
"extracted_events": [
{
"range": [
{
"introduced": "8.58"
},
{
"last_affected": "8.58"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*"
],
"vendor_product": "splunk:universal_forwarder",
"extracted_events": [
{
"range": [
{
"introduced": "9.1.0"
},
{
"last_affected": "9.1.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-8284",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438533,
"published_at": "2020-12-14T20:15:13.903+00:00"
}