CVE-2023-22308

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Published Oct 12, 2023 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

SoftEther VPN

SoftEther VPN

affected

Version	Status	Constraints
`5.01.9674`	affected	—
`5.02`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:softether:vpn:5.01.9674:::::::*
	cpe:2.3:a:softether:vpn:5.02:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2023-26471	An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.841% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1737

History

Nov 22, 2024 12:00 PM Added references View changes

Type	Values Removed	Values Added
References		https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1737

Subscriptions

Softether Vpn

Weaknesses

CWE-191

Sources

CVE record Updated: Aug 2, 2024, 10:07 AM

Status: PUBLISHED
Assigner: talos
Published: Oct 12, 2023, 3:27 PM
Updated: Aug 2, 2024, 10:07 AM
Reserved: Mar 24, 2023, 2:45 PM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 5:35 AM

Status: Modified
Published: Oct 12, 2023, 4:15 PM
Modified: Jun 17, 2026, 5:35 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"affected": [{"affectedData": [{"product": "SoftEther VPN", "vendor": "SoftEther VPN", "versions": [{"status": "affected", "version": "5.01.9674"}, {"status": "affected", "version": "5.02"}]}], "source": "talos-cna@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:*", "matchCriteriaId": "5CF5CF13-B22F-494B-BDC0-B59371979251", "vulnerable": true}, {"criteria": "cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*", "matchCriteriaId": "D21F370B-D9F2-43E8-8E45-0EA74A3C9D4B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability."}, {"lang": "es", "value": "Existe una vulnerabilidad de desbordamiento de enteros en la funcionalidad vpnserver OvsProcessData de SoftEther VPN 5.01.9674 y 5.02. Un paquete de red especialmente manipulado puede provocar una Denegaci\u00f3n de Servicio (DoS). Un atacante puede enviar un paquete malicioso para desencadenar esta vulnerabilidad."}], "id": "CVE-2023-22308", "lastModified": "2026-06-17T05:35:00.653", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "talos-cna@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-10-12T16:15:09.967", "references": [{"source": "talos-cna@cisco.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1737"}], "sourceIdentifier": "talos-cna@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}], "source": "talos-cna@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-191"}], "source": "nvd@nist.gov", "type": "Primary"}]}