🛡️ CVE-2023-49298
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-639 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE CWE-639
Public Exploit ⚠️ Yes
Source NVD
Published 2023-11-24
Updated 2026-06-08
Modified 2025-11-03

Affected Packages

Software From version Fixed in
openzfs — —

References

Exploit, Issue Tracking, Patch, Vendor Advisory https://github.com/openzfs/zfs/issues/15526
Exploit, Patch, Vendor Advisory https://github.com/openzfs/zfs/pull/15571
Patch, Third Party Advisory https://news.ycombinator.com/item?id=38405731
Exploit, Issue Tracking, Patch, Vendor Advisory https://github.com/openzfs/zfs/issues/15526
Exploit, Patch, Vendor Advisory https://github.com/openzfs/zfs/pull/15571
Patch, Third Party Advisory https://news.ycombinator.com/item?id=38405731

Site Security Check

Concerned your site may already be targeted?

BotEraser analyzes incoming traffic patterns and helps identify bot behavior consistent with known exploit attempts.

Check My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.