CVE-2023-2640
Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 26 Jul 2023, 01:59
Last modified:23 Oct 2024, 14:59
Vulnerability Summary
Overall Risk (default)
high
60/100 CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
92.39% CRITICAL
92% probability +0.65%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected
Timeline
26 Jul 2023, 01:59
Published
Vulnerability first disclosed
23 Oct 2024, 14:59
Last Modified
Vulnerability information updated
Description
On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Trends
Current EPSS score: 92.39%• Percentile: 100%
Techniques & Countermeasures
- CWE-863•Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected Systems
- canonical•ubuntu_linux
23.04