Denial of service in libnbd
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-5215 |
| CWE-ID | CWE-252 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libnbd Universal components / Libraries / Libraries used by multiple products |
| Vendor | libguestfs |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Unchecked Return Value
EUVDB-ID: #VU82550
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-5215
CWE-ID:
CWE-252 - Unchecked Return Value
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when handling server responses in NBD client. A remote server can return a block size larger than 2^63 and crash the client.
Install updates from vendor's website.
Vulnerable software versionslibnbd: 1.0.0 - 1.17.5
External linkshttp://access.redhat.com/security/cve/CVE-2023-5215
http://bugzilla.redhat.com/show_bug.cgi?id=2241041
http://listman.redhat.com/archives/libguestfs/2023-September/032635.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
