Vulnerability in Red Hat Enterprise Linux 8
CVE-2023-5215
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001
Affected products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat Enterprise Linux 9 — versions 0:1.18.1-3.el9
- Red Hat Enterprise Linux — versions 8.0, 9.0
- Red Hat Libnbd
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2024:2204 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-5215 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
- listman.redhat.com/archives/libguestfs/2023-September/032635.html (Exploit, Patch)
Frequently asked questions
- What is CVE-2023-5215?
- CVE-2023-5215 is a medium-severity vulnerability in Red Hat Enterprise Linux 8, classified under CWE-241. CVSS score: 5.3/10. Published 2023-09-28.
- How severe is CVE-2023-5215?
- Medium severity. CVSS v3 base score is 5.3 out of 10.