Medium
libarchive — security advisory
Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.
- Products
- libarchive
- Affected versions
- 3.6.2-1, 3.6.2-1+deb12u1, 3.6.2-1+deb12u2, 3.6.2-1+deb12u3, 3.6.2-1+deb12u4, 3.6.2-1+deb12u5, 3.7.2-1, 3.7.2-1.1, 3.7.2-1.1~exp1, 3.7.2-2, 3.7.2-2.1, 3.7.4-1, 3.7.4-1.1, 3.7.4-2, 3.7.4-3, 3.7.4-4, 3.7.4-4+deb13u1, 3.8.10-1, 3.8.4-1, 3.8.5-1, 3.8.6-1, 3.8.7-1, 3.8.8-1, 3.8.8-2, 3.8.9-1
- Fixed versions
- Not specified
- CVEs
- CVE-2023-30571
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:46 UTC · Revision 1
Source evidence
Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.
osv:DEBIAN-CVE-2023-30571
libarchive
Fixed versions: Not specified
libarchive
Fixed versions: Not specified
libarchive
Fixed versions: Not specified
Complete source record
{
"id": "0a5cdd0f5d9cb6704f5cd045b7f21870624e6f9037139bdb474edc2f9638b1f5",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-30571",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-30571",
"summary": "Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.",
"evidence": "osv:DEBIAN-CVE-2023-30571",
"products": [
{
"name": {
"value": "libarchive",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.6.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.2-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.2-1+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.2-1+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.2-1+deb12u4",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.2-1+deb12u5",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.2-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.2-1.1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.2-2.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.4-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.4-3",
"evidence": "/affected/0/versions"
},
{
"value": "3.7.4-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.10-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.8-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.8-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.8.9-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "libarchive",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.4-4",
"evidence": "/affected/1/versions"
},
{
"value": "3.7.4-4+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.10-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.8-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.8-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.8.9-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "libarchive",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.4-4",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.10-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.6-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.7-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.8-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.8-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.8.9-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2023-30571",
"aliases": [
"DEBIAN-CVE-2023-30571"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libarchive",
"purl": "pkg:deb/debian/libarchive?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.6.2-1",
"3.6.2-1+deb12u1",
"3.6.2-1+deb12u2",
"3.6.2-1+deb12u3",
"3.6.2-1+deb12u4",
"3.6.2-1+deb12u5",
"3.7.2-1",
"3.7.2-1.1",
"3.7.2-1.1~exp1",
"3.7.2-2",
"3.7.2-2.1",
"3.7.4-1",
"3.7.4-1.1",
"3.7.4-2",
"3.7.4-3",
"3.7.4-4",
"3.8.10-1",
"3.8.4-1",
"3.8.5-1",
"3.8.6-1",
"3.8.7-1",
"3.8.8-1",
"3.8.8-2",
"3.8.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-30571.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libarchive",
"purl": "pkg:deb/debian/libarchive?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.7.4-4",
"3.7.4-4+deb13u1",
"3.8.10-1",
"3.8.4-1",
"3.8.5-1",
"3.8.6-1",
"3.8.7-1",
"3.8.8-1",
"3.8.8-2",
"3.8.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-30571.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libarchive",
"purl": "pkg:deb/debian/libarchive?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.7.4-4",
"3.8.10-1",
"3.8.4-1",
"3.8.5-1",
"3.8.6-1",
"3.8.7-1",
"3.8.8-1",
"3.8.8-2",
"3.8.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-30571.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-26T18:01:41.149589044Z",
"provider": "osv",
"upstream": [
"CVE-2023-30571"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-30571"
]
},
"related_cves": [
{
"value": "CVE-2023-30571",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 455635,
"published_at": "2023-05-29T20:15:09.513+00:00"
}