FKIE_CVE-2023-2640

Vulnerability from fkie_nvd - Published: 2023-07-26 02:15 - Updated: 2024-11-21 07:58
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
security@ubuntu.comhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640Third Party Advisory
security@ubuntu.comhttps://lists.ubuntu.com/archives/kernel-team/2023-July/140923.htmlMailing List, Patch
security@ubuntu.comhttps://ubuntu.com/security/notices/USN-6250-1Vendor Advisory
security@ubuntu.comhttps://wiz.io/blog/ubuntu-overlayfs-vulnerabilityExploit, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.htmlMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/notices/USN-6250-1Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://wiz.io/blog/ubuntu-overlayfs-vulnerabilityExploit, Mitigation, Third Party Advisory
Impacted products
Vendor Product Version
canonical ubuntu_linux 23.04
To clipboard 

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      "value": "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."
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  "lastModified": "2024-11-21T07:58:59.060",
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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.