Wazuh
CVE-2021-41821
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Integer underflow checks
|
| Impact | CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
Wazuh Manager in Wazuh through 4.1.5 is affected by a remote Integer Underflow vulnerability that might lead to denial of service. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-191. Wazuh Manager in Wazuh through 4.1.5 is affected by a remote Integer Underflow vulnerability that might lead to denial of service. A crafted message must be sent from an authenticated agent to the manager. Affected products include: Wazuh. Version information: through 4.1.5.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Wazuh Manager in Wazuh through 4.1.5 is affected by a remote Integer Underflow vulnerability that might lead to denial of service. A crafted message must be sent from an authenticated agent to the manager.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
In the wazuh-slack active response script in Wazuh 4.2.x before 4.2.5, untrusted user agents are passed to a curl comman
Path-traversal-driven root code execution affects the Wazuh security platform's cluster synchronization layer in version
Arbitrary file read in Wazuh cluster deployments (4.0.0 through 4.14.5, and 5.0.0-beta1/beta2) lets a peer node that alr
Arbitrary file write leading to root remote code execution affects Wazuh worker nodes in clustered deployments running v
A critical deserialization vulnerability in Wazuh's cluster mode allows attackers with access to any worker node to achi
Wazuh Agent before 4.13.0 on Windows can be made by an authenticated, high-privileged configuration writer to open attac
Remote code execution on the Wazuh cluster master node is achievable by any attacker who controls a cluster worker node,
Path traversal in Wazuh's ip-customblock active response script allows low-privileged remote attackers to create or dele
The agent in OSSEC through 3.1.0 on Windows allows local users to gain NT AUTHORITY\SYSTEM access via Directory Traversa
Cluster key disclosure in Wazuh Manager versions 4.0.0 through 4.14.4 enables a two-stage privilege escalation: a low-pr
Unauthenticated remote denial of service in the Wazuh cluster daemon (wazuh-clusterd) allows a network peer to exhaust p
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