Medium
Security advisory
GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-14976
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:33 UTC · Revision 1
Source evidence
GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.
osv:CVE-2020-14976
Complete source record
{
"id": "19ed2e6d8f8a2b2085173abae5e1a5651dc5b8d981d3c87a622441e047defd71",
"url": "https://osv.dev/vulnerability/CVE-2020-14976",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-14976",
"summary": "GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.",
"evidence": "osv:CVE-2020-14976",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-14976",
"aliases": [
"CVE-2020-14976"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/gns3/gns3-server",
"type": "GIT",
"events": [
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"introduced": "0"
},
{
"fixed": "6b54cc27dafedaecaf925f1e131d84c1e37f13fb"
}
],
"database_specific": {
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{
"range": [
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"fixed": "6b54cc27dafedaecaf925f1e131d84c1e37f13fb"
}
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"source": "REFERENCES_TAG",
"original_tag": "v2.1.17"
}
]
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}
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"versions": [
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"v2.1.7",
"v2.1.6",
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"v2.1.2",
"v2.1.0",
"v2.1.0rc4",
"v2.1.0rc3",
"v2.1.0rc2",
"v2.1.0b2",
"v2.1.0b1",
"v2.1.0a2",
"v2.1.0a1",
"v2.0.0b3",
"v2.0.0b2",
"v2.0.0b1",
"v2.0.0a4",
"v2.0.0a3",
"v2.0.0a2",
"v2.0.0a1",
"v1.4.0rc2",
"v1.4.0rc1",
"v1.4.0b5",
"v1.4.0b4",
"v1.4.0b3",
"v1.4.0beta2",
"v1.4.0beta1",
"v1.4.0alpha4",
"v1.4.0alpha3",
"v1.4.0alpha1",
"v1.3.1",
"v1.3.1rc4",
"v1.3.0",
"v1.3.0rc2",
"v1.2.3",
"v1.3.0rc1",
"v1.2.2",
"v1.2.1",
"v1.2",
"v1.1",
"v1.0",
"v1.0-beta4",
"v1.0-beta3",
"v1.0-beta2",
"v1.0-beta1",
"v1.0-alpha8",
"v1.0-alpha7",
"v1.0-alpha6",
"v1.0-alpha5",
"v1.0-alpha4",
"v1.0-alpha3",
"1.0-alpha2",
"v1.0-alpha1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14976.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/gns3/ubridge",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "95cdb49cec4237d6349cf38b2b3d5e58d4ff465d"
},
{
"fixed": "2eb0d1dab6a6de76cf3556130a2d52af101077db"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gns3:ubridge:*:*:*:*:*:macos:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.9.18"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "2eb0d1dab6a6de76cf3556130a2d52af101077db"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v0.9.18",
"v0.9.17",
"v0.9.16",
"v0.9.15",
"v0.9.14",
"v0.9.13",
"v0.9.11",
"v0.9.10",
"v0.9.7",
"v0.9.6",
"v0.9.5",
"v0.9.4",
"v0.9.3",
"v0.9.2",
"v0.9.1",
"v0.9.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14976.json",
"vanir_signatures": [
{
"id": "CVE-2020-14976-3b67f32d",
"digest": {
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},
"source": "https://github.com/gns3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"target": {
"file": "src/iniparser/iniparser.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
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{
"id": "CVE-2020-14976-75dca24f",
"digest": {
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"source": "https://github.com/gns3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"target": {
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"signature_type": "Line",
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{
"id": "CVE-2020-14976-99d677ec",
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"source": "https://github.com/gns3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"target": {
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"deprecated": false,
"signature_type": "Line",
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{
"id": "CVE-2020-14976-ae02b975",
"digest": {
"length": 2056,
"function_hash": "158274898388520807559066150982828201302"
},
"source": "https://github.com/gns3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"target": {
"file": "src/parse.c",
"function": "parse_config"
},
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"signature_type": "Function",
"signature_version": "v1"
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{
"id": "CVE-2020-14976-d99ab4df",
"digest": {
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"function_hash": "138374734529294390996538475399857771297"
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"source": "https://github.com/gns3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"target": {
"file": "src/iniparser/iniparser.c",
"function": "iniparser_load"
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"vanir_signatures_modified": "2026-10-20T13:52:00Z"
}
}
],
"modified": "2026-10-20T13:52:00.590007724Z",
"provider": "osv",
"references": [
"https://github.com/GNS3/gns3-server/releases/tag/v2.1.17",
"https://www.gns3.com/",
"https://github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db",
"https://theevilbit.github.io/posts/"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-14976",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388301,
"published_at": "2020-06-23T20:15:12.927+00:00"
}