ubuntu-cve-2021-35938
Vulnerability from osv_ubuntu
Published
2022-08-25 20:15
Modified
2026-05-20 14:53
Summary
Details
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
6.7 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "librpm3",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "librpmbuild3",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "librpmio3",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "librpmsign1",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.11.1-3ubuntu0.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.11.1-3ubuntu0.1+esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.11.1-2",
"4.11.1-3",
"4.11.1-3ubuntu0.1",
"4.11.1-3ubuntu0.1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpm3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmio3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign3",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.12.0.1+dfsg1-3ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.12.0.1+dfsg1-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.12.0.1+dfsg1-3build2",
"4.12.0.1+dfsg1-3build3",
"4.12.0.1+dfsg1-3ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpm8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmio8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign8",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.14.1+dfsg1-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.14.1+dfsg1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.12.0.2+dfsg1-2build2",
"4.14.0+dfsg1-2",
"4.14.1+dfsg1-2",
"4.14.1+dfsg1-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "debugedit",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpm8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmbuild8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmio8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "librpmsign8",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "python-rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.14.2.1+dfsg1-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.14.2.1+dfsg1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.14.2.1+dfsg1-1",
"4.14.2.1+dfsg1-1build1",
"4.14.2.1+dfsg1-1build2",
"4.14.2.1+dfsg1-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librpm9",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "librpmbuild9",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "librpmio9",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "librpmsign9",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "rpm",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "rpm-common",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.17.0+dfsg1-4build1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.17.0+dfsg1-4build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.17.0+dfsg1-4build1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.16.1.2+dfsg1-3ubuntu1",
"4.16.1.2+dfsg1-3ubuntu3",
"4.17.0+dfsg1-1",
"4.17.0+dfsg1-3",
"4.17.0+dfsg1-4",
"4.17.0+dfsg1-4build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librpm9t64",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "librpmbuild9t64",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "librpmio9t64",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "librpmsign9t64",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "rpm",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "rpm-common",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.18.2+dfsg-2.1build2"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.18.2+dfsg-2.1build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.18.2+dfsg-2.1build2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.18.0+dfsg-1build1",
"4.18.0+dfsg-1build2",
"4.18.2+dfsg-1",
"4.18.2+dfsg-2",
"4.18.2+dfsg-2.1build1",
"4.18.2+dfsg-2.1build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librpm10",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "librpmbuild10",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "librpmio10",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "librpmsign10",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "python3-rpm",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "rpm",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "rpm-common",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "rpm-i18n",
"binary_version": "4.20.1+dfsg-3"
},
{
"binary_name": "rpm2cpio",
"binary_version": "4.20.1+dfsg-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@4.20.1+dfsg-3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.20.1+dfsg-1",
"4.20.1+dfsg-2",
"4.20.1+dfsg-2build1",
"4.20.1+dfsg-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librpm10",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "librpmbuild10",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "librpmio10",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "librpmsign10",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "python3-rpm",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "rpm",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "rpm-common",
"binary_version": "6.0.1-1build1"
},
{
"binary_name": "rpm2cpio",
"binary_version": "6.0.1-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "rpm",
"purl": "pkg:deb/ubuntu/rpm@6.0.1-1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.20.1+dfsg-3",
"6.0.0-2",
"6.0.1-1",
"6.0.1-1build1"
]
}
],
"aliases": [],
"details": "A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"id": "UBUNTU-CVE-2021-35938",
"modified": "2026-05-20T14:53:26Z",
"published": "2022-08-25T20:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-35938"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-35938"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-35938"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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