Vulnerability Description
A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Libnbd | < 1.18.0 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue TrackingVendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploitPatch
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue TrackingVendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploitPatch
FAQ
What is CVE-2023-5215?
CVE-2023-5215 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unin...
How severe is CVE-2023-5215?
CVE-2023-5215 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-5215?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Libnbd, Redhat Enterprise Linux.