Auth bypass in Freebsd
CVE-2023-49298
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.012 (63.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Patch, Vendor Advisory)
- cve@mitre.org (Exploit, Patch, Issue Tracking, Vendor Advisory)
- cve@mitre.org (Patch, Issue Tracking)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
Frequently asked questions
- What is CVE-2023-49298?
- CVE-2023-49298 is a high-severity vulnerability in Freebsd, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2023-11-24.
- How severe is CVE-2023-49298?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-49298 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.