CVE-2023-49298

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.

References

https://www.theregister.com/2023/12/04/two_new_versions_of_openzfs/

https://web.archive.org/web/20231124172959/https://www.ibm.com/support/pages/how-remove-missing%C2%A0newline%C2%A0or%C2%A0line%C2%A0too%C2%A0long-error-etchostsallow%C2%A0and%C2%A0etchostsdeny-files

https://news.ycombinator.com/item?id=38770168

https://news.ycombinator.com/item?id=38405731

https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html

https://github.com/openzfs/zfs/releases/tag/zfs-2.2.2

https://github.com/openzfs/zfs/releases/tag/zfs-2.1.14

https://bugs.gentoo.org/917224

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275308

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3