UBUNTU-CVE-2023-49298
Dashboard / Vulnerabilities / UBUNTU-CVE-2023-49298
Summary:
Details: 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://ubuntu.com/security/CVE-2023-49298, https://news.ycombinator.com/item?id=38405731, 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://github.com/openzfs/zfs/releases/tag/zfs-2.2.2, https://gist.github.com/rincebrain/e23b4a39aba3fadc04db18574d30dc73, https://www.cve.org/CVERecord?id=CVE-2023-49298
Affected packages
Package
Name: zfs-linux
Purl: pkg:deb/ubuntu/zfs-linux?arch=source&distro=xenial
Affected ranges
Type: ECOSYSTEM
Events:
