CVE-2023-5215CWE-241

Libnbd: crash or misbehaviour when nbd server returns an unexpected block size

Medium · published September 28, 2023

CVSS v3.1
5.3
EPSS
1%
Percentile
56.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00806 · 56.3th percentile
Weakness
CWE-241 · Improper Handling of Unexpected Data Type
Published
2023-09-28T13:55Z
EPSS history
Timeline
  • 28 SEP 13:55Z
    Libnbd: crash or misbehaviour when nbd server returns an unexpected block size
    cvelistv5