Vulnerability Description
OpenZFS through 2.1.13 and 2.2.x through 2.2.1, in certain scenarios involving applications that try to rely on efficient copying of file data, can replace file contents with zero-valued bytes and thus potentially disable security mechanisms. NOTE: this issue is not always security related, but can be security related in realistic situations. A possible example is cp, from a recent GNU Core Utilities (coreutils) version, when attempting to preserve a rule set for denying unauthorized access. (One might use cp when configuring access control, such as with the /etc/hosts.deny file specified in the IBM Support reference.) NOTE: this issue occurs less often in version 2.2.1, and in versions before 2.1.4, because of the default configuration in those versions.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openzfs | Openzfs | <= 2.1.13 |
| Freebsd | Freebsd | 14.0 |
Related Weaknesses (CWE)
References
- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275308Issue TrackingPatch
- https://bugs.gentoo.org/917224
- https://github.com/openzfs/zfs/issues/15526ExploitIssue TrackingPatch
- https://github.com/openzfs/zfs/pull/15571ExploitPatchVendor Advisory
- https://github.com/openzfs/zfs/releases/tag/zfs-2.1.14
- https://github.com/openzfs/zfs/releases/tag/zfs-2.2.2
- https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
- https://news.ycombinator.com/item?id=38405731PatchThird Party Advisory
- https://news.ycombinator.com/item?id=38770168
- https://web.archive.org/web/20231124172959/https://www.ibm.com/support/pages/howThird Party Advisory
- https://www.theregister.com/2023/12/04/two_new_versions_of_openzfs/
- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275308Issue TrackingPatch
- https://bugs.gentoo.org/917224
- https://github.com/openzfs/zfs/issues/15526ExploitIssue TrackingPatch
- https://github.com/openzfs/zfs/pull/15571ExploitPatchVendor Advisory
FAQ
What is CVE-2023-49298?
CVE-2023-49298 is a vulnerability with a CVSS score of 7.5 (HIGH). OpenZFS through 2.1.13 and 2.2.x through 2.2.1, in certain scenarios involving applications that try to rely on efficient copying of file data, can replace file contents with zero-valued bytes and thu...
How severe is CVE-2023-49298?
CVE-2023-49298 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-49298?
Check the references section above for vendor advisories and patch information. Affected products include: Openzfs Openzfs, Freebsd Freebsd.