CVE-2023-5215
Libnbd: crash or misbehaviour when nbd server returns an unexpected block size
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Se encontró una falla en libnbd. Un servidor puede responder con un tamaño de bloque mayor que 2^63 (la especificación NBD establece que el tamaño es un valor sin signo de 64 bits). Este problema podría provocar un bloqueo de la aplicación u otro comportamiento no deseado para los clientes NBD que no traten correctamente el valor de retorno de la función nbd_get_size().
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-09-26 CVE Reserved
- 2023-09-28 CVE Published
- 2024-01-04 EPSS Updated
- 2024-09-13 CVE Updated
- 2024-09-13 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-241: Improper Handling of Unexpected Data Type
- CWE-252: Unchecked Return Value
CAPEC
References (4)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://listman.redhat.com/archives/libguestfs/2023-September/032635.html | 2024-09-13 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:2204 | 2024-04-30 | |
| https://access.redhat.com/security/cve/CVE-2023-5215 | 2024-04-30 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2241041 | 2024-04-30 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Redhat Search vendor "Redhat" | Libnbd Search vendor "Redhat" for product "Libnbd" | < 1.18.0 Search vendor "Redhat" for product "Libnbd" and version " < 1.18.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0" | - |
Affected
| ||||||