CVE-2023-5215 is a medium-severity flaw in libnbd, affecting Red Hat Enterprise Linux and libnbd, where a malicious NBD server can send a block size exceeding 2^63. This can cause NBD clients that mishandle the nbd_get_size() return value to crash or exhibit other unintended behavior. The vulnerability has a CVSS score of 6.5 (Medium), indicating an adjacent network attack vector with low complexity and high availability impact, but no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.18.0CPE matchmatch criteria | cpe:2.3:a:redhat:libnbd:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.