Is CVE-2023-5871 in the CISA KEV catalog?

No. CVE-2023-5871 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-5871?

CVE-2023-5871 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-5871?

CVE-2023-5871 has an EPSS score of 0.92% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-5871?

Upgrade libnbd on debian 13 to 1.18.1-1 or later. Fixes are available for 25 affected products.

CVE & CISA-KEV Catalog

CVE-2023-5871

MEDIUM

5.3

CVSS v3

NVD

Description

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.

CWE-617

How to fix

Remediation Available

libnbdDebian

Fixed in:1.18.1-1CVE-2023-5871

libnbdRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbdRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-bash-completionRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-bash-completionRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-debuginfoRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-debuginfoRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-debugsourceRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-debugsourceRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-develRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

libnbd-develRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

nbdfuseRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

nbdfuseRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

nbdfuse-debuginfoRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

nbdfuse-debuginfoRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbdRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbdRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbd-debuginfoRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbd-debuginfoRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbd-develRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

ocaml-libnbd-develRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

python3-libnbdRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

python3-libnbdRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

python3-libnbd-debuginfoRocky

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

python3-libnbd-debuginfoRed Hat / RHEL

Fixed in:0:1.18.1-3.el9RHSA-2024:2204

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.92%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Patch1

lists.libguestfs.org

Vendor Advisory2

Other references1

access.redhat.com

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8617	High	7.5	93%	-	Fix
CVE-2020-36222	High	7.5	78%	-	Fix
CVE-2006-5779	High	7.5	75%	-	Fix
CVE-2021-27212	High	7.5	64%	-	Fix
CVE-2018-5740	High	7.5	59%	-	Fix
CVE-2023-28425	Medium	5.5	55%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.