CVE-2023-5871: Libnbd: malicious nbd server may crash libnbd
First published: Tue Oct 31 2023(Updated: )
A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Libnbd | >=1.17.4<1.18.2 | |
| Redhat Libnbd | =1.19.1 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/libnbd | <1.18.2 | 1.18.2 |
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Reference Links
- https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/PFVUCMPFQUDC23JXSCUUPXIGDZ7XCFMD/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2250809
- https://bugzilla.redhat.com/show_bug.cgi?id=2247308
- https://access.redhat.com/security/cve/CVE-2023-5871
- https://access.redhat.com/errata/RHSA-2024:2204
Frequently Asked Questions
What is the vulnerability ID for this flaw?
The vulnerability ID for this flaw is CVE-2023-5871.
What is the severity of CVE-2023-5871?
The severity of CVE-2023-5871 is high with a CVSS score of 7.5.
How does this vulnerability affect libnbd?
This vulnerability affects libnbd by allowing a malicious NBD server to crash it, potentially causing a Denial of Service.
What is the affected version of libnbd?
The affected version of libnbd is 1.18.2.
How can I fix CVE-2023-5871?
To fix CVE-2023-5871, update libnbd to version 1.18.2 or higher.
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