CVE-2021-20263
Published Mar 9, 2021
Last updated 2 years ago
Overview
- Description
- A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.
- Source
- secalert@redhat.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 3.3
- Impact score
- 1.4
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Severity
- LOW
CVSS 2.0
- Type
- Primary
- Base score
- 2.1
- Impact score
- 2.9
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:N/I:P/A:N
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "58E0AF3A-FB63-438D-892E-960107BAFEC7",
"versionEndExcluding": "5.2.50",
"versionStartIncluding": "5.0.0"
}
],
"operator": "OR"
}
]
}
]