High
hylafax — security advisory
In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.
- Products
- hylafax
- Affected versions
- 3:6.0.6-6, 3:6.0.6-6+deb8u1build0.16.04.1, 3:6.0.6-8, 3:6.0.6-8.1build1, 3:6.0.6-8.1~ubuntu0.18.04.1, 3:6.0.7-11.1, 3:6.0.7-13, 3:6.0.7-13build1, 3:6.0.7-3.1, 3:6.0.7-5build1, 3:6.0.7-7
- Fixed versions
- Not specified
- CVEs
- CVE-2020-15396
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:51 UTC · Revision 1
Source evidence
In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.
osv:UBUNTU-CVE-2020-15396
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
hylafax
Fixed versions: Not specified
Complete source record
{
"id": "45f458d58812d63ad7a76f5cfb1e547290b9a7cc44dc1e6cf23abca8d1de0057",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15396",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-15396",
"summary": "In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.",
"evidence": "osv:UBUNTU-CVE-2020-15396",
"products": [
{
"name": {
"value": "hylafax",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3:6.0.6-6",
"evidence": "/affected/0/versions"
},
{
"value": "3:6.0.6-6+deb8u1build0.16.04.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "hylafax",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "3:6.0.6-8",
"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
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]
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{
"name": {
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"evidence": "/affected/2/package/name"
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"affected_versions": [
{
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{
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"evidence": "/affected/3/package/name"
},
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"affected_versions": [
{
"value": "3:6.0.7-3.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3:6.0.7-5build1",
"evidence": "/affected/4/versions"
},
{
"value": "3:6.0.7-7",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
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"fixed_versions": [],
"affected_versions": [
{
"value": "3:6.0.7-11.1",
"evidence": "/affected/5/versions"
},
{
"value": "3:6.0.7-13",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "hylafax",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3:6.0.7-13build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "hylafax",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3:6.0.7-13",
"evidence": "/affected/7/versions"
},
{
"value": "3:6.0.7-13build1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-15396",
"aliases": [
"UBUNTU-CVE-2020-15396"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"3:6.0.6-6",
"3:6.0.6-6+deb8u1build0.16.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.6-6+deb8u1build0.16.04.1"
},
{
"binary_name": "hylafax-server",
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}
]
}
},
{
"ranges": [
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"events": [
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"introduced": "0"
}
]
}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"3:6.0.6-8",
"3:6.0.6-8.1~ubuntu0.18.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.6-8.1~ubuntu0.18.04.1"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.6-8.1~ubuntu0.18.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"3:6.0.6-8.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.6-8.1build1"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.6-8.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"3:6.0.7-3.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.7-3.1"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.7-3.1"
}
]
}
},
{
"ranges": [
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"package": {
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"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3:6.0.7-5build1",
"3:6.0.7-7"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.7-7"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.7-7"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3:6.0.7-11.1",
"3:6.0.7-13"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.7-13"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.7-13"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3:6.0.7-13build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.7-13build1"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.7-13build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
"package": {
"name": "hylafax",
"purl": "pkg:deb/ubuntu/hylafax?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"3:6.0.7-13",
"3:6.0.7-13build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hylafax-client",
"binary_version": "3:6.0.7-13build1"
},
{
"binary_name": "hylafax-server",
"binary_version": "3:6.0.7-13build1"
}
]
}
}
],
"modified": "2026-10-17T12:56:11.255681231Z",
"provider": "osv",
"upstream": [
"CVE-2020-15396"
],
"references": [
"https://ubuntu.com/security/CVE-2020-15396",
"https://sourceforge.net/p/hylafax/HylaFAX+/2534/",
"https://www.cve.org/CVERecord?id=CVE-2020-15396"
]
},
"related_cves": [
{
"value": "CVE-2020-15396",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354927,
"published_at": "2020-06-30T12:15:00+00:00"
}