Medium
Security advisory
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-11047
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:33 UTC · Revision 1
Source evidence
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.
osv:CVE-2020-11047
Complete source record
{
"id": "09d9fb3e4a6697768fcf31dab14300f5b78b005e939a39f4948012b06ad2927c",
"url": "https://osv.dev/vulnerability/CVE-2020-11047",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-11047",
"summary": "In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.",
"evidence": "osv:CVE-2020-11047",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-11047",
"aliases": [
"CVE-2020-11047",
"GHSA-9fw6-m2q8-h5pw"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/freerdp/freerdp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "5ab2bed8749747b8e4b2ed431fd102bc726be684"
},
{
"fixed": "f5e73cc7c9cd973b516a618da877c87b80950b65"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "f5e73cc7c9cd973b516a618da877c87b80950b65"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"2.0.0-rc4",
"2.0.0-rc3",
"2.0.0-rc2",
"2.0.0-rc1",
"2.0.0-rc0",
"2.0.0-beta1+android11",
"2.0.0-beta1+android10",
"1.2.0-beta1+android9",
"1.2.0-beta1+android7",
"1.1.0-beta+2013071101",
"1.1.0-beta1+ios4",
"1.1.0-beta1+android5",
"1.1.0-beta1+android4",
"1.1.0-beta1+ios3",
"1.1.0-beta1+ios2",
"1.1.0-beta1+android3",
"1.1.0-beta1+android2",
"1.1.0-beta1+ios1",
"1.1.0-beta1",
"1.0.1",
"1.0.0",
"1.0-beta5",
"1.0-beta4",
"1.0-beta2",
"1.0-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11047.json",
"vanir_signatures": [
{
"id": "CVE-2020-11047-c31993f2",
"digest": {
"length": 748,
"function_hash": "275682443746037674413025516285329823533"
},
"source": "https://github.com/freerdp/freerdp/commit/f5e73cc7c9cd973b516a618da877c87b80950b65",
"target": {
"file": "libfreerdp/core/autodetect.c",
"function": "autodetect_recv_bandwidth_measure_results"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2020-11047-c79aeac2",
"digest": {
"threshold": 0.9,
"line_hashes": [
"327842620148603249781762914231727130334",
"221515800091520248381371922132237320982",
"188622707983370506134756774966658531686",
"107574578152860134080665182406564581606"
]
},
"source": "https://github.com/freerdp/freerdp/commit/f5e73cc7c9cd973b516a618da877c87b80950b65",
"target": {
"file": "libfreerdp/core/autodetect.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:49:08Z"
}
}
],
"modified": "2026-10-20T13:49:08.168935352Z",
"provider": "osv",
"references": [
"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9fw6-m2q8-h5pw",
"https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html",
"https://usn.ubuntu.com/4379-1/",
"https://github.com/FreeRDP/FreeRDP/commit/f5e73cc7c9cd973b516a618da877c87b80950b65",
"https://github.com/FreeRDP/FreeRDP/issues/6009"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "19.10"
},
{
"last_affected": "19.10"
},
{
"introduced": "20.04"
},
{
"last_affected": "20.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-11047",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388248,
"published_at": "2020-05-07T20:15:12.127+00:00"
}