CVE-2023-6662: Moodle: Mehrere Schwachstellen

Recommended actionMonitor

BSI has published official national guidance for this CVE while canonical CVE data is pending.

Fix not verified

What, why and how

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Moodle ausnutzen, um einen Cross-Site-Scripting-Angriff durchzuführen, Code auszuführen, einen Denial-of-Service-Angriff zu starten, Informationen offen zu legen und Sicherheitsvorkehrungen zu umgehen.

What

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: the affected interface → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Unspecified
Privileges required: Not stated in the selected CVSS metric
User interaction: Not stated in the selected CVSS metric
Attack complexity: Not stated in the selected CVSS metric
Security boundary: Not stated in the selected CVSS metric
Weakness ? CWE means Common Weakness Enumeration.: CWE not yet assigned
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: Not available from the selected scoring authority.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2023-3199Moodle: Mehrere Schwachstellen

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Fix not verified
Affected: The authority advisory does not provide a concise affected-product range.
Fixed: No fixed version is explicitly recorded in this authority advisory.
Action: No verified remediation instruction is present in the retained authority evidence.
Workaround: Review the linked national authority advisory and any vendor references before scheduling a change.

Evidence and provenance

Published 20 Dec 2023 · Last source change 20 Dec 2023, 23:00 UTC · CWE not yet assigned

CVE recordBSI · CSAF 2.0

CVSS sourceUnavailable

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

Unavailable

European sourceNo official EUVD mapping

Product sourceOfficial national cybersecurity authority

Remediation sourceCVE/CNA references

CWE sourceUnavailable

NVD statusNVD status unavailable

Missing structured fields: official CVE record, canonical affected-version range, CVSS base score. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

20 Dec 2023, 23:00 UTC
Catalogue recordCVE added to the BlackTree catalogue.
Official national cybersecurity authority ↗

2023-12-20BSI advisory published

BSI · WID-SEC-W-2023-3199↗CVE.org publication pending↗NVD enrichment pending↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

Moodle: Mehrere Schwachstellen

Published severity in operational context

Evidence used

Compensating controls

Verification

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.