CVE-2023-2640

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640	Third Party Advisory
https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html	Mailing List Patch
https://ubuntu.com/security/notices/USN-6250-1	Vendor Advisory
https://wiz.io/blog/ubuntu-overlayfs-vulnerability	Exploit Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-07-26 02:15

Updated : 2023-08-03 15:10

NVD link : CVE-2023-2640

Mitre link : CVE-2023-2640

CVE.ORG link : CVE-2023-2640

JSON object : View

Products Affected

canonical

ubuntu_linux

CWE

CWE-863

Incorrect Authorization

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