Denial-of-Service via Malicious NBD in libnbd
CVE-2023-5871 Published on November 27, 2023
Libnbd: malicious nbd server may crash libnbd
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.
Vulnerability Analysis
CVE-2023-5871 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2023-5871 has been classified to as an assertion failure vulnerability or weakness.
Products Associated with CVE-2023-5871
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Affected Versions
Red Hat Enterprise Linux 9:- Version 0:1.18.1-3.el9 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.